81293600

素因数分解:

$2^5\times 5^2\times {\mathrm{307}}^1\times {\mathrm{331}}^1$

素因数の和:658

約数の個数: 72

約数和(自身を含む): 199705968

約数和(自身を除く): 118412368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 307, 331, 400, 614, 662, 800, 1228, 1324, 1535, 1655, 2456, 2648, 3070, 3310, 4912, 5296, 6140, 6620, 7675, 8275, 9824, 10592, 12280, 13240, 15350, 16550, 24560, 26480, 30700, 33100, 49120, 52960, 61400, 66200, 101617, 122800, 132400, 203234, 245600, 264800, 406468, 508085, 812936, 1016170, 1625872, 2032340, 2540425, 3251744, 4064680, 5080850, 8129360, 10161700, 16258720, 20323400, 40646800, 81293600]

約数ペア:

[(1, 81293600), (2, 40646800), (4, 20323400), (5, 16258720), (8, 10161700), (10, 8129360), (16, 5080850), (20, 4064680), (25, 3251744), (32, 2540425), (40, 2032340), (50, 1625872), (80, 1016170), (100, 812936), (160, 508085), (200, 406468), (307, 264800), (331, 245600), (400, 203234), (614, 132400), (662, 122800), (800, 101617), (1228, 66200), (1324, 61400), (1535, 52960), (1655, 49120), (2456, 33100), (2648, 30700), (3070, 26480), (3310, 24560), (4912, 16550), (5296, 15350), (6140, 13240), (6620, 12280), (7675, 10592), (8275, 9824)]