281954920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{17491}}^1$

素因数の和:17546

約数の個数: 64

約数和(自身を含む): 705277440

約数和(自身を除く): 423322520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 2015, 3224, 4030, 8060, 16120, 17491, 34982, 69964, 87455, 139928, 174910, 227383, 349820, 454766, 542221, 699640, 909532, 1084442, 1136915, 1819064, 2168884, 2273830, 2711105, 4337768, 4547660, 5422210, 7048873, 9095320, 10844420, 14097746, 21688840, 28195492, 35244365, 56390984, 70488730, 140977460, 281954920]

約数ペア:

[(1, 281954920), (2, 140977460), (4, 70488730), (5, 56390984), (8, 35244365), (10, 28195492), (13, 21688840), (20, 14097746), (26, 10844420), (31, 9095320), (40, 7048873), (52, 5422210), (62, 4547660), (65, 4337768), (104, 2711105), (124, 2273830), (130, 2168884), (155, 1819064), (248, 1136915), (260, 1084442), (310, 909532), (403, 699640), (520, 542221), (620, 454766), (806, 349820), (1240, 227383), (1612, 174910), (2015, 139928), (3224, 87455), (4030, 69964), (8060, 34982), (16120, 17491)]