80177840

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{9923}}^1$

素因数の和:10037

約数の個数: 40

約数和(自身を含む): 188278128

約数和(自身を除く): 108100288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 4040, 8080, 9923, 19846, 39692, 49615, 79384, 99230, 158768, 198460, 396920, 793840, 1002223, 2004446, 4008892, 5011115, 8017784, 10022230, 16035568, 20044460, 40088920, 80177840]

約数ペア:

[(1, 80177840), (2, 40088920), (4, 20044460), (5, 16035568), (8, 10022230), (10, 8017784), (16, 5011115), (20, 4008892), (40, 2004446), (80, 1002223), (101, 793840), (202, 396920), (404, 198460), (505, 158768), (808, 99230), (1010, 79384), (1616, 49615), (2020, 39692), (4040, 19846), (8080, 9923)]