78487880

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{6269}}^1$

素因数の和:6593

約数の個数: 32

約数和(自身を含む): 177190200

約数和(自身を除く): 98702320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 2504, 3130, 6260, 6269, 12520, 12538, 25076, 31345, 50152, 62690, 125380, 250760, 1962197, 3924394, 7848788, 9810985, 15697576, 19621970, 39243940, 78487880]

約数ペア:

[(1, 78487880), (2, 39243940), (4, 19621970), (5, 15697576), (8, 9810985), (10, 7848788), (20, 3924394), (40, 1962197), (313, 250760), (626, 125380), (1252, 62690), (1565, 50152), (2504, 31345), (3130, 25076), (6260, 12538), (6269, 12520)]