18919480

素因数分解:

$2^3\times 5^1\times {\mathrm{601}}^1\times {\mathrm{787}}^1$

素因数の和:1399

約数の個数: 32

約数和(自身を含む): 42693840

約数和(自身を除く): 23774360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 601, 787, 1202, 1574, 2404, 3005, 3148, 3935, 4808, 6010, 6296, 7870, 12020, 15740, 24040, 31480, 472987, 945974, 1891948, 2364935, 3783896, 4729870, 9459740, 18919480]

約数ペア:

[(1, 18919480), (2, 9459740), (4, 4729870), (5, 3783896), (8, 2364935), (10, 1891948), (20, 945974), (40, 472987), (601, 31480), (787, 24040), (1202, 15740), (1574, 12020), (2404, 7870), (3005, 6296), (3148, 6010), (3935, 4808)]