31697840

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3923}}^1$

素因数の和:4037

約数の個数: 40

約数和(自身を含む): 74446128

約数和(自身を除く): 42748288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 3923, 4040, 7846, 8080, 15692, 19615, 31384, 39230, 62768, 78460, 156920, 313840, 396223, 792446, 1584892, 1981115, 3169784, 3962230, 6339568, 7924460, 15848920, 31697840]

約数ペア:

[(1, 31697840), (2, 15848920), (4, 7924460), (5, 6339568), (8, 3962230), (10, 3169784), (16, 1981115), (20, 1584892), (40, 792446), (80, 396223), (101, 313840), (202, 156920), (404, 78460), (505, 62768), (808, 39230), (1010, 31384), (1616, 19615), (2020, 15692), (3923, 8080), (4040, 7846)]