198956920

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{28751}}^1$

素因数の和:28935

約数の個数: 32

約数和(自身を含む): 450256320

約数和(自身を除く): 251299400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 3460, 6920, 28751, 57502, 115004, 143755, 230008, 287510, 575020, 1150040, 4973923, 9947846, 19895692, 24869615, 39791384, 49739230, 99478460, 198956920]

約数ペア:

[(1, 198956920), (2, 99478460), (4, 49739230), (5, 39791384), (8, 24869615), (10, 19895692), (20, 9947846), (40, 4973923), (173, 1150040), (346, 575020), (692, 287510), (865, 230008), (1384, 143755), (1730, 115004), (3460, 57502), (6920, 28751)]