21641872

素因数分解:

$2^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2647}}^1$

素因数の和:2735

約数の個数: 40

約数和(自身を含む): 48596096

約数和(自身を除く): 26954224

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 73, 112, 146, 292, 511, 584, 1022, 1168, 2044, 2647, 4088, 5294, 8176, 10588, 18529, 21176, 37058, 42352, 74116, 148232, 193231, 296464, 386462, 772924, 1352617, 1545848, 2705234, 3091696, 5410468, 10820936, 21641872]

約数ペア:

[(1, 21641872), (2, 10820936), (4, 5410468), (7, 3091696), (8, 2705234), (14, 1545848), (16, 1352617), (28, 772924), (56, 386462), (73, 296464), (112, 193231), (146, 148232), (292, 74116), (511, 42352), (584, 37058), (1022, 21176), (1168, 18529), (2044, 10588), (2647, 8176), (4088, 5294)]