21909808

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{271}}^1$

素因数の和:473

約数の個数: 40

約数和(自身を含む): 44251136

約数和(自身を除く): 22341328

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 163, 248, 271, 326, 496, 542, 652, 1084, 1304, 2168, 2608, 4336, 5053, 8401, 10106, 16802, 20212, 33604, 40424, 44173, 67208, 80848, 88346, 134416, 176692, 353384, 706768, 1369363, 2738726, 5477452, 10954904, 21909808]

約数ペア:

[(1, 21909808), (2, 10954904), (4, 5477452), (8, 2738726), (16, 1369363), (31, 706768), (62, 353384), (124, 176692), (163, 134416), (248, 88346), (271, 80848), (326, 67208), (496, 44173), (542, 40424), (652, 33604), (1084, 20212), (1304, 16802), (2168, 10106), (2608, 8401), (4336, 5053)]