20945178

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{281}}^1$

素因数の和:431

約数の個数: 48

約数和(自身を含む): 47115432

約数和(自身を除く): 26170254

約数列:

[1, 2, 3, 6, 9, 18, 41, 82, 101, 123, 202, 246, 281, 303, 369, 562, 606, 738, 843, 909, 1686, 1818, 2529, 4141, 5058, 8282, 11521, 12423, 23042, 24846, 28381, 34563, 37269, 56762, 69126, 74538, 85143, 103689, 170286, 207378, 255429, 510858, 1163621, 2327242, 3490863, 6981726, 10472589, 20945178]

約数ペア:

[(1, 20945178), (2, 10472589), (3, 6981726), (6, 3490863), (9, 2327242), (18, 1163621), (41, 510858), (82, 255429), (101, 207378), (123, 170286), (202, 103689), (246, 85143), (281, 74538), (303, 69126), (369, 56762), (562, 37269), (606, 34563), (738, 28381), (843, 24846), (909, 23042), (1686, 12423), (1818, 11521), (2529, 8282), (4141, 5058)]