21159804560

素因数分解:

$2^4\times 5^1\times {\mathrm{264497557}}^1$

素因数の和:264497570

約数の個数: 20

約数和(自身を含む): 49196545788

約数和(自身を除く): 28036741228

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 264497557, 528995114, 1057990228, 1322487785, 2115980456, 2644975570, 4231960912, 5289951140, 10579902280, 21159804560]

約数ペア:

[(1, 21159804560), (2, 10579902280), (4, 5289951140), (5, 4231960912), (8, 2644975570), (10, 2115980456), (16, 1322487785), (20, 1057990228), (40, 528995114), (80, 264497557)]