21047455

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29437}}^1$

素因数の和:29466

約数の個数: 16

約数和(自身を含む): 29673504

約数和(自身を除く): 8626049

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 29437, 147185, 323807, 382681, 1619035, 1913405, 4209491, 21047455]

約数ペア:

[(1, 21047455), (5, 4209491), (11, 1913405), (13, 1619035), (55, 382681), (65, 323807), (143, 147185), (715, 29437)]