21721984

素因数分解:

$2^7\times {\mathrm{223}}^1\times {\mathrm{761}}^1$

素因数の和:998

約数の個数: 32

約数和(自身を含む): 43525440

約数和(自身を除く): 21803456

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 223, 446, 761, 892, 1522, 1784, 3044, 3568, 6088, 7136, 12176, 14272, 24352, 28544, 48704, 97408, 169703, 339406, 678812, 1357624, 2715248, 5430496, 10860992, 21721984]

約数ペア:

[(1, 21721984), (2, 10860992), (4, 5430496), (8, 2715248), (16, 1357624), (32, 678812), (64, 339406), (128, 169703), (223, 97408), (446, 48704), (761, 28544), (892, 24352), (1522, 14272), (1784, 12176), (3044, 7136), (3568, 6088)]