66972680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{421}}^1$

素因数の和:570

約数の個数: 64

約数和(自身を含む): 156325680

約数和(自身を除く): 89353000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 97, 164, 194, 205, 328, 388, 410, 421, 485, 776, 820, 842, 970, 1640, 1684, 1940, 2105, 3368, 3880, 3977, 4210, 7954, 8420, 15908, 16840, 17261, 19885, 31816, 34522, 39770, 40837, 69044, 79540, 81674, 86305, 138088, 159080, 163348, 172610, 204185, 326696, 345220, 408370, 690440, 816740, 1633480, 1674317, 3348634, 6697268, 8371585, 13394536, 16743170, 33486340, 66972680]

約数ペア:

[(1, 66972680), (2, 33486340), (4, 16743170), (5, 13394536), (8, 8371585), (10, 6697268), (20, 3348634), (40, 1674317), (41, 1633480), (82, 816740), (97, 690440), (164, 408370), (194, 345220), (205, 326696), (328, 204185), (388, 172610), (410, 163348), (421, 159080), (485, 138088), (776, 86305), (820, 81674), (842, 79540), (970, 69044), (1640, 40837), (1684, 39770), (1940, 34522), (2105, 31816), (3368, 19885), (3880, 17261), (3977, 16840), (4210, 15908), (7954, 8420)]