731508740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{71}}^1\times {\mathrm{1427}}^1$

素因数の和:1545

約数の個数: 72

約数和(自身を含む): 1645261632

約数和(自身を除く): 913752892

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 71, 76, 95, 142, 190, 284, 355, 361, 380, 710, 722, 1349, 1420, 1427, 1444, 1805, 2698, 2854, 3610, 5396, 5708, 6745, 7135, 7220, 13490, 14270, 25631, 26980, 27113, 28540, 51262, 54226, 101317, 102524, 108452, 128155, 135565, 202634, 256310, 271130, 405268, 506585, 512620, 515147, 542260, 1013170, 1030294, 1925023, 2026340, 2060588, 2575735, 3850046, 5151470, 7700092, 9625115, 10302940, 19250230, 36575437, 38500460, 73150874, 146301748, 182877185, 365754370, 731508740]

約数ペア:

[(1, 731508740), (2, 365754370), (4, 182877185), (5, 146301748), (10, 73150874), (19, 38500460), (20, 36575437), (38, 19250230), (71, 10302940), (76, 9625115), (95, 7700092), (142, 5151470), (190, 3850046), (284, 2575735), (355, 2060588), (361, 2026340), (380, 1925023), (710, 1030294), (722, 1013170), (1349, 542260), (1420, 515147), (1427, 512620), (1444, 506585), (1805, 405268), (2698, 271130), (2854, 256310), (3610, 202634), (5396, 135565), (5708, 128155), (6745, 108452), (7135, 102524), (7220, 101317), (13490, 54226), (14270, 51262), (25631, 28540), (26980, 27113)]