21596560

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{2389}}^1$

素因数の和:2515

約数の個数: 40

約数和(自身を含む): 50677560

約数和(自身を除く): 29081000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2260, 2389, 4520, 4778, 9040, 9556, 11945, 19112, 23890, 38224, 47780, 95560, 191120, 269957, 539914, 1079828, 1349785, 2159656, 2699570, 4319312, 5399140, 10798280, 21596560]

約数ペア:

[(1, 21596560), (2, 10798280), (4, 5399140), (5, 4319312), (8, 2699570), (10, 2159656), (16, 1349785), (20, 1079828), (40, 539914), (80, 269957), (113, 191120), (226, 95560), (452, 47780), (565, 38224), (904, 23890), (1130, 19112), (1808, 11945), (2260, 9556), (2389, 9040), (4520, 4778)]