20616981

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{599}}^1$

素因数の和:769

約数の個数: 32

約数和(自身を含む): 34560000

約数和(自身を除く): 13943019

約数列:

[1, 3, 7, 11, 21, 33, 77, 149, 231, 447, 599, 1043, 1639, 1797, 3129, 4193, 4917, 6589, 11473, 12579, 19767, 34419, 46123, 89251, 138369, 267753, 624757, 981761, 1874271, 2945283, 6872327, 20616981]

約数ペア:

[(1, 20616981), (3, 6872327), (7, 2945283), (11, 1874271), (21, 981761), (33, 624757), (77, 267753), (149, 138369), (231, 89251), (447, 46123), (599, 34419), (1043, 19767), (1639, 12579), (1797, 11473), (3129, 6589), (4193, 4917)]