21291448

素因数分解:

$2^3\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{571}}^1$

素因数の和:715

約数の個数: 32

約数和(自身を含む): 41184000

約数和(自身を除く): 19892552

約数列:

[1, 2, 4, 8, 59, 79, 118, 158, 236, 316, 472, 571, 632, 1142, 2284, 4568, 4661, 9322, 18644, 33689, 37288, 45109, 67378, 90218, 134756, 180436, 269512, 360872, 2661431, 5322862, 10645724, 21291448]

約数ペア:

[(1, 21291448), (2, 10645724), (4, 5322862), (8, 2661431), (59, 360872), (79, 269512), (118, 180436), (158, 134756), (236, 90218), (316, 67378), (472, 45109), (571, 37288), (632, 33689), (1142, 18644), (2284, 9322), (4568, 4661)]