66654520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{419}}^1$

素因数の和:568

約数の個数: 64

約数和(自身を含む): 155584800

約数和(自身を除く): 88930280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 97, 164, 194, 205, 328, 388, 410, 419, 485, 776, 820, 838, 970, 1640, 1676, 1940, 2095, 3352, 3880, 3977, 4190, 7954, 8380, 15908, 16760, 17179, 19885, 31816, 34358, 39770, 40643, 68716, 79540, 81286, 85895, 137432, 159080, 162572, 171790, 203215, 325144, 343580, 406430, 687160, 812860, 1625720, 1666363, 3332726, 6665452, 8331815, 13330904, 16663630, 33327260, 66654520]

約数ペア:

[(1, 66654520), (2, 33327260), (4, 16663630), (5, 13330904), (8, 8331815), (10, 6665452), (20, 3332726), (40, 1666363), (41, 1625720), (82, 812860), (97, 687160), (164, 406430), (194, 343580), (205, 325144), (328, 203215), (388, 171790), (410, 162572), (419, 159080), (485, 137432), (776, 85895), (820, 81286), (838, 79540), (970, 68716), (1640, 40643), (1676, 39770), (1940, 34358), (2095, 31816), (3352, 19885), (3880, 17179), (3977, 16760), (4190, 15908), (7954, 8380)]