21861723

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{181}}^1$

素因数の和:379

約数の個数: 32

約数和(自身を含む): 33429760

約数和(自身を除く): 11568037

約数列:

[1, 3, 13, 19, 39, 57, 163, 181, 247, 489, 543, 741, 2119, 2353, 3097, 3439, 6357, 7059, 9291, 10317, 29503, 40261, 44707, 88509, 120783, 134121, 383539, 560557, 1150617, 1681671, 7287241, 21861723]

約数ペア:

[(1, 21861723), (3, 7287241), (13, 1681671), (19, 1150617), (39, 560557), (57, 383539), (163, 134121), (181, 120783), (247, 88509), (489, 44707), (543, 40261), (741, 29503), (2119, 10317), (2353, 9291), (3097, 7059), (3439, 6357)]