7721140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{421}}^1$

素因数の和:568

約数の個数: 48

約数和(自身を含む): 18716544

約数和(自身を除く): 10995404

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 421, 524, 655, 842, 917, 1310, 1684, 1834, 2105, 2620, 2947, 3668, 4210, 4585, 5894, 8420, 9170, 11788, 14735, 18340, 29470, 55151, 58940, 110302, 220604, 275755, 386057, 551510, 772114, 1103020, 1544228, 1930285, 3860570, 7721140]

約数ペア:

[(1, 7721140), (2, 3860570), (4, 1930285), (5, 1544228), (7, 1103020), (10, 772114), (14, 551510), (20, 386057), (28, 275755), (35, 220604), (70, 110302), (131, 58940), (140, 55151), (262, 29470), (421, 18340), (524, 14735), (655, 11788), (842, 9170), (917, 8420), (1310, 5894), (1684, 4585), (1834, 4210), (2105, 3668), (2620, 2947)]