19640804620

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{264487}}^1$

素因数の和:264622

約数の個数: 48

約数和(自身を含む): 42656624640

約数和(自身を除く): 23015820020

約数列:

[1, 2, 4, 5, 10, 20, 47, 79, 94, 158, 188, 235, 316, 395, 470, 790, 940, 1580, 3713, 7426, 14852, 18565, 37130, 74260, 264487, 528974, 1057948, 1322435, 2644870, 5289740, 12430889, 20894473, 24861778, 41788946, 49723556, 62154445, 83577892, 104472365, 124308890, 208944730, 248617780, 417889460, 982040231, 1964080462, 3928160924, 4910201155, 9820402310, 19640804620]

約数ペア:

[(1, 19640804620), (2, 9820402310), (4, 4910201155), (5, 3928160924), (10, 1964080462), (20, 982040231), (47, 417889460), (79, 248617780), (94, 208944730), (158, 124308890), (188, 104472365), (235, 83577892), (316, 62154445), (395, 49723556), (470, 41788946), (790, 24861778), (940, 20894473), (1580, 12430889), (3713, 5289740), (7426, 2644870), (14852, 1322435), (18565, 1057948), (37130, 528974), (74260, 264487)]