66456920

素因数分解:

$2^3\times 5^1\times {\mathrm{631}}^1\times {\mathrm{2633}}^1$

素因数の和:3275

約数の個数: 32

約数和(自身を含む): 149821920

約数和(自身を除く): 83365000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 631, 1262, 2524, 2633, 3155, 5048, 5266, 6310, 10532, 12620, 13165, 21064, 25240, 26330, 52660, 105320, 1661423, 3322846, 6645692, 8307115, 13291384, 16614230, 33228460, 66456920]

約数ペア:

[(1, 66456920), (2, 33228460), (4, 16614230), (5, 13291384), (8, 8307115), (10, 6645692), (20, 3322846), (40, 1661423), (631, 105320), (1262, 52660), (2524, 26330), (2633, 25240), (3155, 21064), (5048, 13165), (5266, 12620), (6310, 10532)]