128515760

素因数分解:

$2^4\times 5^1\times {\mathrm{349}}^1\times {\mathrm{4603}}^1$

素因数の和:4965

約数の個数: 40

約数和(自身を含む): 299720400

約数和(自身を除く): 171204640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 349, 698, 1396, 1745, 2792, 3490, 4603, 5584, 6980, 9206, 13960, 18412, 23015, 27920, 36824, 46030, 73648, 92060, 184120, 368240, 1606447, 3212894, 6425788, 8032235, 12851576, 16064470, 25703152, 32128940, 64257880, 128515760]

約数ペア:

[(1, 128515760), (2, 64257880), (4, 32128940), (5, 25703152), (8, 16064470), (10, 12851576), (16, 8032235), (20, 6425788), (40, 3212894), (80, 1606447), (349, 368240), (698, 184120), (1396, 92060), (1745, 73648), (2792, 46030), (3490, 36824), (4603, 27920), (5584, 23015), (6980, 18412), (9206, 13960)]