28689980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{130409}}^1$

素因数の和:130429

約数の個数: 24

約数和(自身を含む): 65726640

約数和(自身を除く): 37036660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 130409, 260818, 521636, 652045, 1304090, 1434499, 2608180, 2868998, 5737996, 7172495, 14344990, 28689980]

約数ペア:

[(1, 28689980), (2, 14344990), (4, 7172495), (5, 5737996), (10, 2868998), (11, 2608180), (20, 1434499), (22, 1304090), (44, 652045), (55, 521636), (110, 260818), (220, 130409)]