284970020

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{78721}}^1$

素因数の和:78911

約数の個数: 24

約数和(自身を含む): 601750968

約数和(自身を除く): 316780948

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 78721, 157442, 314884, 393605, 787210, 1574420, 14248501, 28497002, 56994004, 71242505, 142485010, 284970020]

約数ペア:

[(1, 284970020), (2, 142485010), (4, 71242505), (5, 56994004), (10, 28497002), (20, 14248501), (181, 1574420), (362, 787210), (724, 393605), (905, 314884), (1810, 157442), (3620, 78721)]