21787112

素因数分解:

$2^3\times {\mathrm{389}}^1\times {\mathrm{7001}}^1$

素因数の和:7396

約数の個数: 16

約数和(自身を含む): 40961700

約数和(自身を除く): 19174588

約数列:

[1, 2, 4, 8, 389, 778, 1556, 3112, 7001, 14002, 28004, 56008, 2723389, 5446778, 10893556, 21787112]

約数ペア:

[(1, 21787112), (2, 10893556), (4, 5446778), (8, 2723389), (389, 56008), (778, 28004), (1556, 14002), (3112, 7001)]