20157580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{587}}^1$

素因数の和:714

約数の個数: 48

約数和(自身を含む): 45341856

約数和(自身を除く): 25184276

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 101, 170, 202, 340, 404, 505, 587, 1010, 1174, 1717, 2020, 2348, 2935, 3434, 5870, 6868, 8585, 9979, 11740, 17170, 19958, 34340, 39916, 49895, 59287, 99790, 118574, 199580, 237148, 296435, 592870, 1007879, 1185740, 2015758, 4031516, 5039395, 10078790, 20157580]

約数ペア:

[(1, 20157580), (2, 10078790), (4, 5039395), (5, 4031516), (10, 2015758), (17, 1185740), (20, 1007879), (34, 592870), (68, 296435), (85, 237148), (101, 199580), (170, 118574), (202, 99790), (340, 59287), (404, 49895), (505, 39916), (587, 34340), (1010, 19958), (1174, 17170), (1717, 11740), (2020, 9979), (2348, 8585), (2935, 6868), (3434, 5870)]