72877220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{280297}}^1$

素因数の和:280319

約数の個数: 24

約数和(自身を含む): 164815224

約数和(自身を除く): 91938004

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 280297, 560594, 1121188, 1401485, 2802970, 3643861, 5605940, 7287722, 14575444, 18219305, 36438610, 72877220]

約数ペア:

[(1, 72877220), (2, 36438610), (4, 18219305), (5, 14575444), (10, 7287722), (13, 5605940), (20, 3643861), (26, 2802970), (52, 1401485), (65, 1121188), (130, 560594), (260, 280297)]