20265644

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 42147840

約数和(自身を除く): 21882196

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 127, 139, 164, 254, 278, 287, 508, 556, 574, 889, 973, 1148, 1778, 1946, 3556, 3892, 5207, 5699, 10414, 11398, 17653, 20828, 22796, 35306, 36449, 39893, 70612, 72898, 79786, 123571, 145796, 159572, 247142, 494284, 723773, 1447546, 2895092, 5066411, 10132822, 20265644]

約数ペア:

[(1, 20265644), (2, 10132822), (4, 5066411), (7, 2895092), (14, 1447546), (28, 723773), (41, 494284), (82, 247142), (127, 159572), (139, 145796), (164, 123571), (254, 79786), (278, 72898), (287, 70612), (508, 39893), (556, 36449), (574, 35306), (889, 22796), (973, 20828), (1148, 17653), (1778, 11398), (1946, 10414), (3556, 5699), (3892, 5207)]