21501904

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{17011}}^1$

素因数の和:17098

約数の個数: 20

約数和(自身を含む): 42189760

約数和(自身を除く): 20687856

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 17011, 34022, 68044, 136088, 272176, 1343869, 2687738, 5375476, 10750952, 21501904]

約数ペア:

[(1, 21501904), (2, 10750952), (4, 5375476), (8, 2687738), (16, 1343869), (79, 272176), (158, 136088), (316, 68044), (632, 34022), (1264, 17011)]