81673840

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32933}}^1$

素因数の和:32977

約数の個数: 40

約数和(自身を含む): 196023168

約数和(自身を除く): 114349328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 32933, 65866, 131732, 164665, 263464, 329330, 526928, 658660, 1020923, 1317320, 2041846, 2634640, 4083692, 5104615, 8167384, 10209230, 16334768, 20418460, 40836920, 81673840]

約数ペア:

[(1, 81673840), (2, 40836920), (4, 20418460), (5, 16334768), (8, 10209230), (10, 8167384), (16, 5104615), (20, 4083692), (31, 2634640), (40, 2041846), (62, 1317320), (80, 1020923), (124, 658660), (155, 526928), (248, 329330), (310, 263464), (496, 164665), (620, 131732), (1240, 65866), (2480, 32933)]