20647250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{6353}}^1$

素因数の和:6383

約数の個数: 32

約数和(自身を含む): 41631408

約数和(自身を除く): 20984158

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 650, 1625, 3250, 6353, 12706, 31765, 63530, 82589, 158825, 165178, 317650, 412945, 794125, 825890, 1588250, 2064725, 4129450, 10323625, 20647250]

約数ペア:

[(1, 20647250), (2, 10323625), (5, 4129450), (10, 2064725), (13, 1588250), (25, 825890), (26, 794125), (50, 412945), (65, 317650), (125, 165178), (130, 158825), (250, 82589), (325, 63530), (650, 31765), (1625, 12706), (3250, 6353)]