638702820

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{373}}^1$

素因数の和:552

約数の個数: 240

約数和(自身を含む): 2311212288

約数和(自身を除く): 1672509468

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 151, 162, 180, 189, 210, 252, 270, 302, 315, 324, 373, 378, 405, 420, 453, 540, 567, 604, 630, 746, 755, 756, 810, 906, 945, 1057, 1119, 1134, 1260, 1359, 1492, 1510, 1620, 1812, 1865, 1890, 2114, 2238, 2265, 2268, 2611, 2718, 2835, 3020, 3171, 3357, 3730, 3780, 4077, 4228, 4476, 4530, 5222, 5285, 5436, 5595, 5670, 6342, 6714, 6795, 7460, 7833, 8154, 9060, 9513, 10071, 10444, 10570, 11190, 11340, 12231, 12684, 13055, 13428, 13590, 15666, 15855, 16308, 16785, 19026, 20142, 20385, 21140, 22380, 23499, 24462, 26110, 27180, 28539, 30213, 31332, 31710, 33570, 38052, 39165, 40284, 40770, 46998, 47565, 48924, 50355, 52220, 56323, 57078, 60426, 61155, 63420, 67140, 70497, 78330, 81540, 85617, 93996, 95130, 100710, 112646, 114156, 117495, 120852, 122310, 140994, 142695, 151065, 156660, 168969, 171234, 190260, 201420, 211491, 225292, 234990, 244620, 281615, 281988, 285390, 302130, 337938, 342468, 352485, 394261, 422982, 428085, 469980, 506907, 563230, 570780, 604260, 675876, 704970, 788522, 844845, 845964, 856170, 1013814, 1057455, 1126460, 1182783, 1409940, 1520721, 1577044, 1689690, 1712340, 1971305, 2027628, 2114910, 2365566, 2534535, 3041442, 3379380, 3548349, 3942610, 4229820, 4562163, 4731132, 5069070, 5913915, 6082884, 7096698, 7603605, 7885220, 9124326, 10138140, 10645047, 11827830, 14193396, 15207210, 17741745, 18248652, 21290094, 22810815, 23655660, 30414420, 31935141, 35483490, 42580188, 45621630, 53225235, 63870282, 70966980, 91243260, 106450470, 127740564, 159675705, 212900940, 319351410, 638702820]

約数ペア:

[(1, 638702820), (2, 319351410), (3, 212900940), (4, 159675705), (5, 127740564), (6, 106450470), (7, 91243260), (9, 70966980), (10, 63870282), (12, 53225235), (14, 45621630), (15, 42580188), (18, 35483490), (20, 31935141), (21, 30414420), (27, 23655660), (28, 22810815), (30, 21290094), (35, 18248652), (36, 17741745), (42, 15207210), (45, 14193396), (54, 11827830), (60, 10645047), (63, 10138140), (70, 9124326), (81, 7885220), (84, 7603605), (90, 7096698), (105, 6082884), (108, 5913915), (126, 5069070), (135, 4731132), (140, 4562163), (151, 4229820), (162, 3942610), (180, 3548349), (189, 3379380), (210, 3041442), (252, 2534535), (270, 2365566), (302, 2114910), (315, 2027628), (324, 1971305), (373, 1712340), (378, 1689690), (405, 1577044), (420, 1520721), (453, 1409940), (540, 1182783), (567, 1126460), (604, 1057455), (630, 1013814), (746, 856170), (755, 845964), (756, 844845), (810, 788522), (906, 704970), (945, 675876), (1057, 604260), (1119, 570780), (1134, 563230), (1260, 506907), (1359, 469980), (1492, 428085), (1510, 422982), (1620, 394261), (1812, 352485), (1865, 342468), (1890, 337938), (2114, 302130), (2238, 285390), (2265, 281988), (2268, 281615), (2611, 244620), (2718, 234990), (2835, 225292), (3020, 211491), (3171, 201420), (3357, 190260), (3730, 171234), (3780, 168969), (4077, 156660), (4228, 151065), (4476, 142695), (4530, 140994), (5222, 122310), (5285, 120852), (5436, 117495), (5595, 114156), (5670, 112646), (6342, 100710), (6714, 95130), (6795, 93996), (7460, 85617), (7833, 81540), (8154, 78330), (9060, 70497), (9513, 67140), (10071, 63420), (10444, 61155), (10570, 60426), (11190, 57078), (11340, 56323), (12231, 52220), (12684, 50355), (13055, 48924), (13428, 47565), (13590, 46998), (15666, 40770), (15855, 40284), (16308, 39165), (16785, 38052), (19026, 33570), (20142, 31710), (20385, 31332), (21140, 30213), (22380, 28539), (23499, 27180), (24462, 26110)]