40281865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{19991}}^1$

素因数の和:20040

約数の個数: 16

約数和(自身を含む): 53738496

約数和(自身を除く): 13456631

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 19991, 99955, 259883, 619721, 1299415, 3098605, 8056373, 40281865]

約数ペア:

[(1, 40281865), (5, 8056373), (13, 3098605), (31, 1299415), (65, 619721), (155, 259883), (403, 99955), (2015, 19991)]