21084455

素因数分解:

$5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{2099}}^1$

素因数の和:2159

約数の個数: 24

約数和(自身を含む): 30164400

約数和(自身を除く): 9079945

約数列:

[1, 5, 7, 35, 41, 49, 205, 245, 287, 1435, 2009, 2099, 10045, 10495, 14693, 73465, 86059, 102851, 430295, 514255, 602413, 3012065, 4216891, 21084455]

約数ペア:

[(1, 21084455), (5, 4216891), (7, 3012065), (35, 602413), (41, 514255), (49, 430295), (205, 102851), (245, 86059), (287, 73465), (1435, 14693), (2009, 10495), (2099, 10045)]