21104421

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{1499}}^1$

素因数の和:1553

約数の個数: 24

約数和(自身を含む): 32004000

約数和(自身を除く): 10899579

約数列:

[1, 3, 13, 19, 39, 57, 247, 361, 741, 1083, 1499, 4497, 4693, 14079, 19487, 28481, 58461, 85443, 370253, 541139, 1110759, 1623417, 7034807, 21104421]

約数ペア:

[(1, 21104421), (3, 7034807), (13, 1623417), (19, 1110759), (39, 541139), (57, 370253), (247, 85443), (361, 58461), (741, 28481), (1083, 19487), (1499, 14079), (4497, 4693)]