638093240

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{154877}}^1$

素因数の和:154991

約数の個数: 32

約数和(自身を含む): 1449658080

約数和(自身を除く): 811564840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 154877, 309754, 619508, 774385, 1239016, 1548770, 3097540, 6195080, 15952331, 31904662, 63809324, 79761655, 127618648, 159523310, 319046620, 638093240]

約数ペア:

[(1, 638093240), (2, 319046620), (4, 159523310), (5, 127618648), (8, 79761655), (10, 63809324), (20, 31904662), (40, 15952331), (103, 6195080), (206, 3097540), (412, 1548770), (515, 1239016), (824, 774385), (1030, 619508), (2060, 309754), (4120, 154877)]