21985080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{829}}^1$

素因数の和:873

約数の個数: 128

約数和(自身を含む): 75297600

約数和(自身を除く): 53312520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 17, 20, 24, 26, 30, 34, 39, 40, 51, 52, 60, 65, 68, 78, 85, 102, 104, 120, 130, 136, 156, 170, 195, 204, 221, 255, 260, 312, 340, 390, 408, 442, 510, 520, 663, 680, 780, 829, 884, 1020, 1105, 1326, 1560, 1658, 1768, 2040, 2210, 2487, 2652, 3315, 3316, 4145, 4420, 4974, 5304, 6630, 6632, 8290, 8840, 9948, 10777, 12435, 13260, 14093, 16580, 19896, 21554, 24870, 26520, 28186, 32331, 33160, 42279, 43108, 49740, 53885, 56372, 64662, 70465, 84558, 86216, 99480, 107770, 112744, 129324, 140930, 161655, 169116, 183209, 211395, 215540, 258648, 281860, 323310, 338232, 366418, 422790, 431080, 549627, 563720, 646620, 732836, 845580, 916045, 1099254, 1293240, 1465672, 1691160, 1832090, 2198508, 2748135, 3664180, 4397016, 5496270, 7328360, 10992540, 21985080]

約数ペア:

[(1, 21985080), (2, 10992540), (3, 7328360), (4, 5496270), (5, 4397016), (6, 3664180), (8, 2748135), (10, 2198508), (12, 1832090), (13, 1691160), (15, 1465672), (17, 1293240), (20, 1099254), (24, 916045), (26, 845580), (30, 732836), (34, 646620), (39, 563720), (40, 549627), (51, 431080), (52, 422790), (60, 366418), (65, 338232), (68, 323310), (78, 281860), (85, 258648), (102, 215540), (104, 211395), (120, 183209), (130, 169116), (136, 161655), (156, 140930), (170, 129324), (195, 112744), (204, 107770), (221, 99480), (255, 86216), (260, 84558), (312, 70465), (340, 64662), (390, 56372), (408, 53885), (442, 49740), (510, 43108), (520, 42279), (663, 33160), (680, 32331), (780, 28186), (829, 26520), (884, 24870), (1020, 21554), (1105, 19896), (1326, 16580), (1560, 14093), (1658, 13260), (1768, 12435), (2040, 10777), (2210, 9948), (2487, 8840), (2652, 8290), (3315, 6632), (3316, 6630), (4145, 5304), (4420, 4974)]