128211325

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{7643}}^1$

素因数の和:7725

約数の個数: 24

約数和(自身を含む): 176301216

約数和(自身を除く): 48089891

約数列:

[1, 5, 11, 25, 55, 61, 275, 305, 671, 1525, 3355, 7643, 16775, 38215, 84073, 191075, 420365, 466223, 2101825, 2331115, 5128453, 11655575, 25642265, 128211325]

約数ペア:

[(1, 128211325), (5, 25642265), (11, 11655575), (25, 5128453), (55, 2331115), (61, 2101825), (275, 466223), (305, 420365), (671, 191075), (1525, 84073), (3355, 38215), (7643, 16775)]