1720402740

素因数分解:

$2^2\times 3^4\times 5^1\times 7^2\times {\mathrm{21673}}^1$

素因数の和:21708

約数の個数: 180

約数和(自身を含む): 6278394276

約数和(自身を除く): 4557991536

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, 49, 54, 60, 63, 70, 81, 84, 90, 98, 105, 108, 126, 135, 140, 147, 162, 180, 189, 196, 210, 245, 252, 270, 294, 315, 324, 378, 405, 420, 441, 490, 540, 567, 588, 630, 735, 756, 810, 882, 945, 980, 1134, 1260, 1323, 1470, 1620, 1764, 1890, 2205, 2268, 2646, 2835, 2940, 3780, 3969, 4410, 5292, 5670, 6615, 7938, 8820, 11340, 13230, 15876, 19845, 21673, 26460, 39690, 43346, 65019, 79380, 86692, 108365, 130038, 151711, 195057, 216730, 260076, 303422, 325095, 390114, 433460, 455133, 585171, 606844, 650190, 758555, 780228, 910266, 975285, 1061977, 1170342, 1300380, 1365399, 1517110, 1755513, 1820532, 1950570, 2123954, 2275665, 2340684, 2730798, 2925855, 3034220, 3185931, 3511026, 3901140, 4096197, 4247908, 4551330, 5309885, 5461596, 5851710, 6371862, 6826995, 7022052, 8192394, 8777565, 9102660, 9557793, 10619770, 11703420, 12288591, 12743724, 13653990, 15929655, 16384788, 17555130, 19115586, 20480985, 21239540, 24577182, 27307980, 28673379, 31859310, 35110260, 38231172, 40961970, 47788965, 49154364, 57346758, 61442955, 63718620, 81923940, 86020137, 95577930, 114693516, 122885910, 143366895, 172040274, 191155860, 245771820, 286733790, 344080548, 430100685, 573467580, 860201370, 1720402740]

約数ペア:

[(1, 1720402740), (2, 860201370), (3, 573467580), (4, 430100685), (5, 344080548), (6, 286733790), (7, 245771820), (9, 191155860), (10, 172040274), (12, 143366895), (14, 122885910), (15, 114693516), (18, 95577930), (20, 86020137), (21, 81923940), (27, 63718620), (28, 61442955), (30, 57346758), (35, 49154364), (36, 47788965), (42, 40961970), (45, 38231172), (49, 35110260), (54, 31859310), (60, 28673379), (63, 27307980), (70, 24577182), (81, 21239540), (84, 20480985), (90, 19115586), (98, 17555130), (105, 16384788), (108, 15929655), (126, 13653990), (135, 12743724), (140, 12288591), (147, 11703420), (162, 10619770), (180, 9557793), (189, 9102660), (196, 8777565), (210, 8192394), (245, 7022052), (252, 6826995), (270, 6371862), (294, 5851710), (315, 5461596), (324, 5309885), (378, 4551330), (405, 4247908), (420, 4096197), (441, 3901140), (490, 3511026), (540, 3185931), (567, 3034220), (588, 2925855), (630, 2730798), (735, 2340684), (756, 2275665), (810, 2123954), (882, 1950570), (945, 1820532), (980, 1755513), (1134, 1517110), (1260, 1365399), (1323, 1300380), (1470, 1170342), (1620, 1061977), (1764, 975285), (1890, 910266), (2205, 780228), (2268, 758555), (2646, 650190), (2835, 606844), (2940, 585171), (3780, 455133), (3969, 433460), (4410, 390114), (5292, 325095), (5670, 303422), (6615, 260076), (7938, 216730), (8820, 195057), (11340, 151711), (13230, 130038), (15876, 108365), (19845, 86692), (21673, 79380), (26460, 65019), (39690, 43346)]