21100976

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{443}}^1$

素因数の和:693

約数の個数: 40

約数和(自身を含む): 44320080

約数和(自身を除く): 23219104

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 229, 443, 458, 886, 916, 1772, 1832, 2977, 3544, 3664, 5759, 5954, 7088, 11518, 11908, 23036, 23816, 46072, 47632, 92144, 101447, 202894, 405788, 811576, 1318811, 1623152, 2637622, 5275244, 10550488, 21100976]

約数ペア:

[(1, 21100976), (2, 10550488), (4, 5275244), (8, 2637622), (13, 1623152), (16, 1318811), (26, 811576), (52, 405788), (104, 202894), (208, 101447), (229, 92144), (443, 47632), (458, 46072), (886, 23816), (916, 23036), (1772, 11908), (1832, 11518), (2977, 7088), (3544, 5954), (3664, 5759)]