20396516

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{163}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 42430080

約数和(自身を除く): 22033564

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 109, 163, 164, 218, 287, 326, 436, 574, 652, 763, 1141, 1148, 1526, 2282, 3052, 4469, 4564, 6683, 8938, 13366, 17767, 17876, 26732, 31283, 35534, 46781, 62566, 71068, 93562, 124369, 125132, 187124, 248738, 497476, 728447, 1456894, 2913788, 5099129, 10198258, 20396516]

約数ペア:

[(1, 20396516), (2, 10198258), (4, 5099129), (7, 2913788), (14, 1456894), (28, 728447), (41, 497476), (82, 248738), (109, 187124), (163, 125132), (164, 124369), (218, 93562), (287, 71068), (326, 62566), (436, 46781), (574, 35534), (652, 31283), (763, 26732), (1141, 17876), (1148, 17767), (1526, 13366), (2282, 8938), (3052, 6683), (4469, 4564)]