81956920

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{12269}}^1$

素因数の和:12447

約数の個数: 32

約数和(自身を含む): 185522400

約数和(自身を除く): 103565480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 3340, 6680, 12269, 24538, 49076, 61345, 98152, 122690, 245380, 490760, 2048923, 4097846, 8195692, 10244615, 16391384, 20489230, 40978460, 81956920]

約数ペア:

[(1, 81956920), (2, 40978460), (4, 20489230), (5, 16391384), (8, 10244615), (10, 8195692), (20, 4097846), (40, 2048923), (167, 490760), (334, 245380), (668, 122690), (835, 98152), (1336, 61345), (1670, 49076), (3340, 24538), (6680, 12269)]