688281620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{39511}}^1$

素因数の和:39600

約数の個数: 48

約数和(自身を含む): 1579847808

約数和(自身を除く): 891566188

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, 39511, 79022, 158044, 197555, 395110, 513643, 790220, 1027286, 2054572, 2568215, 2647237, 5136430, 5294474, 10272860, 10588948, 13236185, 26472370, 34414081, 52944740, 68828162, 137656324, 172070405, 344140810, 688281620]

約数ペア:

[(1, 688281620), (2, 344140810), (4, 172070405), (5, 137656324), (10, 68828162), (13, 52944740), (20, 34414081), (26, 26472370), (52, 13236185), (65, 10588948), (67, 10272860), (130, 5294474), (134, 5136430), (260, 2647237), (268, 2568215), (335, 2054572), (670, 1027286), (871, 790220), (1340, 513643), (1742, 395110), (3484, 197555), (4355, 158044), (8710, 79022), (17420, 39511)]