20402889

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{1499}}^1$

素因数の和:1864

約数の個数: 16

約数和(自身を含む): 29400000

約数和(自身を除く): 8997111

約数列:

[1, 3, 13, 39, 349, 1047, 1499, 4497, 4537, 13611, 19487, 58461, 523151, 1569453, 6800963, 20402889]

約数ペア:

[(1, 20402889), (3, 6800963), (13, 1569453), (39, 523151), (349, 58461), (1047, 19487), (1499, 13611), (4497, 4537)]