72401180

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1\times {\mathrm{409}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 156219840

約数和(自身を除く): 83818660

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 167, 212, 265, 334, 409, 530, 668, 818, 835, 1060, 1636, 1670, 2045, 3340, 4090, 8180, 8851, 17702, 21677, 35404, 43354, 44255, 68303, 86708, 88510, 108385, 136606, 177020, 216770, 273212, 341515, 433540, 683030, 1366060, 3620059, 7240118, 14480236, 18100295, 36200590, 72401180]

約数ペア:

[(1, 72401180), (2, 36200590), (4, 18100295), (5, 14480236), (10, 7240118), (20, 3620059), (53, 1366060), (106, 683030), (167, 433540), (212, 341515), (265, 273212), (334, 216770), (409, 177020), (530, 136606), (668, 108385), (818, 88510), (835, 86708), (1060, 68303), (1636, 44255), (1670, 43354), (2045, 35404), (3340, 21677), (4090, 17702), (8180, 8851)]