21790035

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11261}}^1$

素因数の和:11315

約数の個数: 24

約数和(自身を含む): 38651184

約数和(自身を除く): 16861149

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 11261, 33783, 56305, 101349, 168915, 484223, 506745, 1452669, 2421115, 4358007, 7263345, 21790035]

約数ペア:

[(1, 21790035), (3, 7263345), (5, 4358007), (9, 2421115), (15, 1452669), (43, 506745), (45, 484223), (129, 168915), (215, 101349), (387, 56305), (645, 33783), (1935, 11261)]