19766684

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 40997376

約数和(自身を除く): 21230692

約数列:

[1, 2, 4, 7, 14, 28, 61, 71, 122, 142, 163, 244, 284, 326, 427, 497, 652, 854, 994, 1141, 1708, 1988, 2282, 4331, 4564, 8662, 9943, 11573, 17324, 19886, 23146, 30317, 39772, 46292, 60634, 69601, 81011, 121268, 139202, 162022, 278404, 324044, 705953, 1411906, 2823812, 4941671, 9883342, 19766684]

約数ペア:

[(1, 19766684), (2, 9883342), (4, 4941671), (7, 2823812), (14, 1411906), (28, 705953), (61, 324044), (71, 278404), (122, 162022), (142, 139202), (163, 121268), (244, 81011), (284, 69601), (326, 60634), (427, 46292), (497, 39772), (652, 30317), (854, 23146), (994, 19886), (1141, 17324), (1708, 11573), (1988, 9943), (2282, 8662), (4331, 4564)]