21000981

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{241}}^1\times {\mathrm{937}}^1$

素因数の和:1212

約数の個数: 16

約数和(自身を含む): 29055488

約数和(自身を除く): 8054507

約数列:

[1, 3, 31, 93, 241, 723, 937, 2811, 7471, 22413, 29047, 87141, 225817, 677451, 7000327, 21000981]

約数ペア:

[(1, 21000981), (3, 7000327), (31, 677451), (93, 225817), (241, 87141), (723, 29047), (937, 22413), (2811, 7471)]