21890173012

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{2411}}^1\times {\mathrm{133519}}^1$

素因数の和:135951

約数の個数: 24

約数和(自身を含む): 40578330240

約数和(自身を除く): 18688157228

約数列:

[1, 2, 4, 17, 34, 68, 2411, 4822, 9644, 40987, 81974, 133519, 163948, 267038, 534076, 2269823, 4539646, 9079292, 321914309, 643828618, 1287657236, 5472543253, 10945086506, 21890173012]

約数ペア:

[(1, 21890173012), (2, 10945086506), (4, 5472543253), (17, 1287657236), (34, 643828618), (68, 321914309), (2411, 9079292), (4822, 4539646), (9644, 2269823), (40987, 534076), (81974, 267038), (133519, 163948)]