638736840

素因数分解:

$2^3\times 3^4\times 5^1\times 7^1\times {\mathrm{28163}}^1$

素因数の和:28193

約数の個数: 160

約数和(自身を含む): 2453647680

約数和(自身を除く): 1814910840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 81, 84, 90, 105, 108, 120, 126, 135, 140, 162, 168, 180, 189, 210, 216, 252, 270, 280, 315, 324, 360, 378, 405, 420, 504, 540, 567, 630, 648, 756, 810, 840, 945, 1080, 1134, 1260, 1512, 1620, 1890, 2268, 2520, 2835, 3240, 3780, 4536, 5670, 7560, 11340, 22680, 28163, 56326, 84489, 112652, 140815, 168978, 197141, 225304, 253467, 281630, 337956, 394282, 422445, 506934, 563260, 591423, 675912, 760401, 788564, 844890, 985705, 1013868, 1126520, 1182846, 1267335, 1520802, 1577128, 1689780, 1774269, 1971410, 2027736, 2281203, 2365692, 2534670, 2957115, 3041604, 3379560, 3548538, 3802005, 3942820, 4562406, 4731384, 5069340, 5322807, 5914230, 6083208, 7097076, 7604010, 7885640, 8871345, 9124812, 10138680, 10645614, 11406015, 11828460, 14194152, 15208020, 15968421, 17742690, 18249624, 21291228, 22812030, 23656920, 26614035, 30416040, 31936842, 35485380, 42582456, 45624060, 53228070, 63873684, 70970760, 79842105, 91248120, 106456140, 127747368, 159684210, 212912280, 319368420, 638736840]

約数ペア:

[(1, 638736840), (2, 319368420), (3, 212912280), (4, 159684210), (5, 127747368), (6, 106456140), (7, 91248120), (8, 79842105), (9, 70970760), (10, 63873684), (12, 53228070), (14, 45624060), (15, 42582456), (18, 35485380), (20, 31936842), (21, 30416040), (24, 26614035), (27, 23656920), (28, 22812030), (30, 21291228), (35, 18249624), (36, 17742690), (40, 15968421), (42, 15208020), (45, 14194152), (54, 11828460), (56, 11406015), (60, 10645614), (63, 10138680), (70, 9124812), (72, 8871345), (81, 7885640), (84, 7604010), (90, 7097076), (105, 6083208), (108, 5914230), (120, 5322807), (126, 5069340), (135, 4731384), (140, 4562406), (162, 3942820), (168, 3802005), (180, 3548538), (189, 3379560), (210, 3041604), (216, 2957115), (252, 2534670), (270, 2365692), (280, 2281203), (315, 2027736), (324, 1971410), (360, 1774269), (378, 1689780), (405, 1577128), (420, 1520802), (504, 1267335), (540, 1182846), (567, 1126520), (630, 1013868), (648, 985705), (756, 844890), (810, 788564), (840, 760401), (945, 675912), (1080, 591423), (1134, 563260), (1260, 506934), (1512, 422445), (1620, 394282), (1890, 337956), (2268, 281630), (2520, 253467), (2835, 225304), (3240, 197141), (3780, 168978), (4536, 140815), (5670, 112652), (7560, 84489), (11340, 56326), (22680, 28163)]