21965295

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{557}}^1$

素因数の和:815

約数の個数: 32

約数和(自身を含む): 38568960

約数和(自身を除く): 16603665

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 239, 557, 717, 1195, 1671, 2629, 2785, 3585, 6127, 7887, 8355, 13145, 18381, 30635, 39435, 91905, 133123, 399369, 665615, 1464353, 1996845, 4393059, 7321765, 21965295]

約数ペア:

[(1, 21965295), (3, 7321765), (5, 4393059), (11, 1996845), (15, 1464353), (33, 665615), (55, 399369), (165, 133123), (239, 91905), (557, 39435), (717, 30635), (1195, 18381), (1671, 13145), (2629, 8355), (2785, 7887), (3585, 6127)]