21719490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55691}}^1$

素因数の和:55714

約数の個数: 32

約数和(自身を含む): 56137536

約数和(自身を除く): 34418046

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55691, 111382, 167073, 278455, 334146, 556910, 723983, 835365, 1447966, 1670730, 2171949, 3619915, 4343898, 7239830, 10859745, 21719490]

約数ペア:

[(1, 21719490), (2, 10859745), (3, 7239830), (5, 4343898), (6, 3619915), (10, 2171949), (13, 1670730), (15, 1447966), (26, 835365), (30, 723983), (39, 556910), (65, 334146), (78, 278455), (130, 167073), (195, 111382), (390, 55691)]