207858040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{399727}}^1$

素因数の和:399751

約数の個数: 32

約数和(自身を含む): 503657280

約数和(自身を除く): 295799240

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 399727, 799454, 1598908, 1998635, 3197816, 3997270, 5196451, 7994540, 10392902, 15989080, 20785804, 25982255, 41571608, 51964510, 103929020, 207858040]

約数ペア:

[(1, 207858040), (2, 103929020), (4, 51964510), (5, 41571608), (8, 25982255), (10, 20785804), (13, 15989080), (20, 10392902), (26, 7994540), (40, 5196451), (52, 3997270), (65, 3197816), (104, 1998635), (130, 1598908), (260, 799454), (520, 399727)]