778865620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{44711}}^1$

素因数の和:44800

約数の個数: 48

約数和(自身を含む): 1787764608

約数和(自身を除く): 1008898988

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 260, 268, 335, 670, 871, 1340, 1742, 3484, 4355, 8710, 17420, 44711, 89422, 178844, 223555, 447110, 581243, 894220, 1162486, 2324972, 2906215, 2995637, 5812430, 5991274, 11624860, 11982548, 14978185, 29956370, 38943281, 59912740, 77886562, 155773124, 194716405, 389432810, 778865620]

約数ペア:

[(1, 778865620), (2, 389432810), (4, 194716405), (5, 155773124), (10, 77886562), (13, 59912740), (20, 38943281), (26, 29956370), (52, 14978185), (65, 11982548), (67, 11624860), (130, 5991274), (134, 5812430), (260, 2995637), (268, 2906215), (335, 2324972), (670, 1162486), (871, 894220), (1340, 581243), (1742, 447110), (3484, 223555), (4355, 178844), (8710, 89422), (17420, 44711)]