20015870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{3917}}^1$

素因数の和:4004

約数の個数: 32

約数和(自身を含む): 41750208

約数和(自身を除く): 21734338

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 73, 146, 365, 511, 730, 1022, 2555, 3917, 5110, 7834, 19585, 27419, 39170, 54838, 137095, 274190, 285941, 571882, 1429705, 2001587, 2859410, 4003174, 10007935, 20015870]

約数ペア:

[(1, 20015870), (2, 10007935), (5, 4003174), (7, 2859410), (10, 2001587), (14, 1429705), (35, 571882), (70, 285941), (73, 274190), (146, 137095), (365, 54838), (511, 39170), (730, 27419), (1022, 19585), (2555, 7834), (3917, 5110)]