278865250

素因数分解:

$2^1\times 5^3\times {\mathrm{521}}^1\times {\mathrm{2141}}^1$

素因数の和:2679

約数の個数: 32

約数和(自身を含む): 523282032

約数和(自身を除く): 244416782

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 521, 1042, 2141, 2605, 4282, 5210, 10705, 13025, 21410, 26050, 53525, 65125, 107050, 130250, 267625, 535250, 1115461, 2230922, 5577305, 11154610, 27886525, 55773050, 139432625, 278865250]

約数ペア:

[(1, 278865250), (2, 139432625), (5, 55773050), (10, 27886525), (25, 11154610), (50, 5577305), (125, 2230922), (250, 1115461), (521, 535250), (1042, 267625), (2141, 130250), (2605, 107050), (4282, 65125), (5210, 53525), (10705, 26050), (13025, 21410)]