28760680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:155

約数の個数: 128

約数和(自身を含む): 76204800

約数和(自身を除く): 47444120

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 41, 52, 65, 71, 76, 82, 95, 104, 130, 142, 152, 164, 190, 205, 247, 260, 284, 328, 355, 380, 410, 494, 520, 533, 568, 710, 760, 779, 820, 923, 988, 1066, 1235, 1349, 1420, 1558, 1640, 1846, 1976, 2132, 2470, 2665, 2698, 2840, 2911, 3116, 3692, 3895, 4264, 4615, 4940, 5330, 5396, 5822, 6232, 6745, 7384, 7790, 9230, 9880, 10127, 10660, 10792, 11644, 13490, 14555, 15580, 17537, 18460, 20254, 21320, 23288, 26980, 29110, 31160, 35074, 36920, 37843, 40508, 50635, 53960, 55309, 58220, 70148, 75686, 81016, 87685, 101270, 110618, 116440, 140296, 151372, 175370, 189215, 202540, 221236, 276545, 302744, 350740, 378430, 405080, 442472, 553090, 701480, 719017, 756860, 1106180, 1438034, 1513720, 2212360, 2876068, 3595085, 5752136, 7190170, 14380340, 28760680]

約数ペア:

[(1, 28760680), (2, 14380340), (4, 7190170), (5, 5752136), (8, 3595085), (10, 2876068), (13, 2212360), (19, 1513720), (20, 1438034), (26, 1106180), (38, 756860), (40, 719017), (41, 701480), (52, 553090), (65, 442472), (71, 405080), (76, 378430), (82, 350740), (95, 302744), (104, 276545), (130, 221236), (142, 202540), (152, 189215), (164, 175370), (190, 151372), (205, 140296), (247, 116440), (260, 110618), (284, 101270), (328, 87685), (355, 81016), (380, 75686), (410, 70148), (494, 58220), (520, 55309), (533, 53960), (568, 50635), (710, 40508), (760, 37843), (779, 36920), (820, 35074), (923, 31160), (988, 29110), (1066, 26980), (1235, 23288), (1349, 21320), (1420, 20254), (1558, 18460), (1640, 17537), (1846, 15580), (1976, 14555), (2132, 13490), (2470, 11644), (2665, 10792), (2698, 10660), (2840, 10127), (2911, 9880), (3116, 9230), (3692, 7790), (3895, 7384), (4264, 6745), (4615, 6232), (4940, 5822), (5330, 5396)]