19951280

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{2207}}^1$

素因数の和:2333

約数の個数: 40

約数和(自身を含む): 46818432

約数和(自身を除く): 26867152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2207, 2260, 4414, 4520, 8828, 9040, 11035, 17656, 22070, 35312, 44140, 88280, 176560, 249391, 498782, 997564, 1246955, 1995128, 2493910, 3990256, 4987820, 9975640, 19951280]

約数ペア:

[(1, 19951280), (2, 9975640), (4, 4987820), (5, 3990256), (8, 2493910), (10, 1995128), (16, 1246955), (20, 997564), (40, 498782), (80, 249391), (113, 176560), (226, 88280), (452, 44140), (565, 35312), (904, 22070), (1130, 17656), (1808, 11035), (2207, 9040), (2260, 8828), (4414, 4520)]