65444980

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{24979}}^1$

素因数の和:25119

約数の個数: 24

約数和(自身を含む): 138489120

約数和(自身を除く): 73044140

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 24979, 49958, 99916, 124895, 249790, 499580, 3272249, 6544498, 13088996, 16361245, 32722490, 65444980]

約数ペア:

[(1, 65444980), (2, 32722490), (4, 16361245), (5, 13088996), (10, 6544498), (20, 3272249), (131, 499580), (262, 249790), (524, 124895), (655, 99916), (1310, 49958), (2620, 24979)]