12727820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{397}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 30757440

約数和(自身を除く): 18029620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 229, 397, 458, 794, 916, 1145, 1588, 1603, 1985, 2290, 2779, 3206, 3970, 4580, 5558, 6412, 7940, 8015, 11116, 13895, 16030, 27790, 32060, 55580, 90913, 181826, 363652, 454565, 636391, 909130, 1272782, 1818260, 2545564, 3181955, 6363910, 12727820]

約数ペア:

[(1, 12727820), (2, 6363910), (4, 3181955), (5, 2545564), (7, 1818260), (10, 1272782), (14, 909130), (20, 636391), (28, 454565), (35, 363652), (70, 181826), (140, 90913), (229, 55580), (397, 32060), (458, 27790), (794, 16030), (916, 13895), (1145, 11116), (1588, 8015), (1603, 7940), (1985, 6412), (2290, 5558), (2779, 4580), (3206, 3970)]