320179120

素因数分解:

$2^4\times 5^1\times {\mathrm{4002239}}^1$

素因数の和:4002252

約数の個数: 20

約数和(自身を含む): 744416640

約数和(自身を除く): 424237520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4002239, 8004478, 16008956, 20011195, 32017912, 40022390, 64035824, 80044780, 160089560, 320179120]

約数ペア:

[(1, 320179120), (2, 160089560), (4, 80044780), (5, 64035824), (8, 40022390), (10, 32017912), (16, 20011195), (20, 16008956), (40, 8004478), (80, 4002239)]