8486180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 18627840

約数和(自身を除く): 10141660

約数列:

[1, 2, 4, 5, 10, 20, 41, 79, 82, 131, 158, 164, 205, 262, 316, 395, 410, 524, 655, 790, 820, 1310, 1580, 2620, 3239, 5371, 6478, 10349, 10742, 12956, 16195, 20698, 21484, 26855, 32390, 41396, 51745, 53710, 64780, 103490, 107420, 206980, 424309, 848618, 1697236, 2121545, 4243090, 8486180]

約数ペア:

[(1, 8486180), (2, 4243090), (4, 2121545), (5, 1697236), (10, 848618), (20, 424309), (41, 206980), (79, 107420), (82, 103490), (131, 64780), (158, 53710), (164, 51745), (205, 41396), (262, 32390), (316, 26855), (395, 21484), (410, 20698), (524, 16195), (655, 12956), (790, 10742), (820, 10349), (1310, 6478), (1580, 5371), (2620, 3239)]