81249980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{580357}}^1$

素因数の和:580373

約数の個数: 24

約数和(自身を含む): 195000288

約数和(自身を除く): 113750308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 580357, 1160714, 2321428, 2901785, 4062499, 5803570, 8124998, 11607140, 16249996, 20312495, 40624990, 81249980]

約数ペア:

[(1, 81249980), (2, 40624990), (4, 20312495), (5, 16249996), (7, 11607140), (10, 8124998), (14, 5803570), (20, 4062499), (28, 2901785), (35, 2321428), (70, 1160714), (140, 580357)]