21457051

素因数分解:

$7^3\times {\mathrm{11}}^3\times {\mathrm{47}}^1$

素因数の和:101

約数の個数: 32

約数和(自身を含む): 28108800

約数和(自身を除く): 6651749

約数列:

[1, 7, 11, 47, 49, 77, 121, 329, 343, 517, 539, 847, 1331, 2303, 3619, 3773, 5687, 5929, 9317, 16121, 25333, 39809, 41503, 62557, 65219, 177331, 278663, 437899, 456533, 1950641, 3065293, 21457051]

約数ペア:

[(1, 21457051), (7, 3065293), (11, 1950641), (47, 456533), (49, 437899), (77, 278663), (121, 177331), (329, 65219), (343, 62557), (517, 41503), (539, 39809), (847, 25333), (1331, 16121), (2303, 9317), (3619, 5929), (3773, 5687)]