20995672

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:463

約数の個数: 32

約数和(自身を含む): 40320000

約数和(自身を除く): 19324328

約数列:

[1, 2, 4, 8, 79, 139, 158, 239, 278, 316, 478, 556, 632, 956, 1112, 1912, 10981, 18881, 21962, 33221, 37762, 43924, 66442, 75524, 87848, 132884, 151048, 265768, 2624459, 5248918, 10497836, 20995672]

約数ペア:

[(1, 20995672), (2, 10497836), (4, 5248918), (8, 2624459), (79, 265768), (139, 151048), (158, 132884), (239, 87848), (278, 75524), (316, 66442), (478, 43924), (556, 37762), (632, 33221), (956, 21962), (1112, 18881), (1912, 10981)]