21690252368

素因数分解:

$2^4\times {\mathrm{113}}^1\times {\mathrm{11996821}}^1$

素因数の和:11996942

約数の個数: 20

約数和(自身を含む): 42396768948

約数和(自身を除く): 20706516580

約数列:

[1, 2, 4, 8, 16, 113, 226, 452, 904, 1808, 11996821, 23993642, 47987284, 95974568, 191949136, 1355640773, 2711281546, 5422563092, 10845126184, 21690252368]

約数ペア:

[(1, 21690252368), (2, 10845126184), (4, 5422563092), (8, 2711281546), (16, 1355640773), (113, 191949136), (226, 95974568), (452, 47987284), (904, 23993642), (1808, 11996821)]