621451640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{1723}}^1$

素因数の和:1932

約数の個数: 64

約数和(自身を含む): 1429954560

約数和(自身を除く): 808502920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 127, 142, 254, 284, 355, 508, 568, 635, 710, 1016, 1270, 1420, 1723, 2540, 2840, 3446, 5080, 6892, 8615, 9017, 13784, 17230, 18034, 34460, 36068, 45085, 68920, 72136, 90170, 122333, 180340, 218821, 244666, 360680, 437642, 489332, 611665, 875284, 978664, 1094105, 1223330, 1750568, 2188210, 2446660, 4376420, 4893320, 8752840, 15536291, 31072582, 62145164, 77681455, 124290328, 155362910, 310725820, 621451640]

約数ペア:

[(1, 621451640), (2, 310725820), (4, 155362910), (5, 124290328), (8, 77681455), (10, 62145164), (20, 31072582), (40, 15536291), (71, 8752840), (127, 4893320), (142, 4376420), (254, 2446660), (284, 2188210), (355, 1750568), (508, 1223330), (568, 1094105), (635, 978664), (710, 875284), (1016, 611665), (1270, 489332), (1420, 437642), (1723, 360680), (2540, 244666), (2840, 218821), (3446, 180340), (5080, 122333), (6892, 90170), (8615, 72136), (9017, 68920), (13784, 45085), (17230, 36068), (18034, 34460)]