21715288

素因数分解:

$2^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{4357}}^1$

素因数の和:4459

約数の個数: 32

約数和(自身を含む): 47066400

約数和(自身を除く): 25351112

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 89, 178, 356, 623, 712, 1246, 2492, 4357, 4984, 8714, 17428, 30499, 34856, 60998, 121996, 243992, 387773, 775546, 1551092, 2714411, 3102184, 5428822, 10857644, 21715288]

約数ペア:

[(1, 21715288), (2, 10857644), (4, 5428822), (7, 3102184), (8, 2714411), (14, 1551092), (28, 775546), (56, 387773), (89, 243992), (178, 121996), (356, 60998), (623, 34856), (712, 30499), (1246, 17428), (2492, 8714), (4357, 4984)]