861080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:144

約数の個数: 64

約数和(自身を含む): 2246400

約数和(自身を除く): 1385320

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 103, 110, 152, 190, 206, 209, 220, 380, 412, 418, 440, 515, 760, 824, 836, 1030, 1045, 1133, 1672, 1957, 2060, 2090, 2266, 3914, 4120, 4180, 4532, 5665, 7828, 8360, 9064, 9785, 11330, 15656, 19570, 21527, 22660, 39140, 43054, 45320, 78280, 86108, 107635, 172216, 215270, 430540, 861080]

約数ペア:

[(1, 861080), (2, 430540), (4, 215270), (5, 172216), (8, 107635), (10, 86108), (11, 78280), (19, 45320), (20, 43054), (22, 39140), (38, 22660), (40, 21527), (44, 19570), (55, 15656), (76, 11330), (88, 9785), (95, 9064), (103, 8360), (110, 7828), (152, 5665), (190, 4532), (206, 4180), (209, 4120), (220, 3914), (380, 2266), (412, 2090), (418, 2060), (440, 1957), (515, 1672), (760, 1133), (824, 1045), (836, 1030)]