21393872

素因数分解:

$2^4\times {\mathrm{59}}^1\times {\mathrm{131}}^1\times {\mathrm{173}}^1$

素因数の和:371

約数の個数: 40

約数和(自身を含む): 42720480

約数和(自身を除く): 21326608

約数列:

[1, 2, 4, 8, 16, 59, 118, 131, 173, 236, 262, 346, 472, 524, 692, 944, 1048, 1384, 2096, 2768, 7729, 10207, 15458, 20414, 22663, 30916, 40828, 45326, 61832, 81656, 90652, 123664, 163312, 181304, 362608, 1337117, 2674234, 5348468, 10696936, 21393872]

約数ペア:

[(1, 21393872), (2, 10696936), (4, 5348468), (8, 2674234), (16, 1337117), (59, 362608), (118, 181304), (131, 163312), (173, 123664), (236, 90652), (262, 81656), (346, 61832), (472, 45326), (524, 40828), (692, 30916), (944, 22663), (1048, 20414), (1384, 15458), (2096, 10207), (2768, 7729)]