19388980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{74573}}^1$

素因数の和:74595

約数の個数: 24

約数和(自身を含む): 43849512

約数和(自身を除く): 24460532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 74573, 149146, 298292, 372865, 745730, 969449, 1491460, 1938898, 3877796, 4847245, 9694490, 19388980]

約数ペア:

[(1, 19388980), (2, 9694490), (4, 4847245), (5, 3877796), (10, 1938898), (13, 1491460), (20, 969449), (26, 745730), (52, 372865), (65, 298292), (130, 149146), (260, 74573)]