81200920

素因数分解:

$2^3\times 5^1\times {\mathrm{331}}^1\times {\mathrm{6133}}^1$

素因数の和:6475

約数の個数: 32

約数和(自身を含む): 183283920

約数和(自身を除く): 102083000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 331, 662, 1324, 1655, 2648, 3310, 6133, 6620, 12266, 13240, 24532, 30665, 49064, 61330, 122660, 245320, 2030023, 4060046, 8120092, 10150115, 16240184, 20300230, 40600460, 81200920]

約数ペア:

[(1, 81200920), (2, 40600460), (4, 20300230), (5, 16240184), (8, 10150115), (10, 8120092), (20, 4060046), (40, 2030023), (331, 245320), (662, 122660), (1324, 61330), (1655, 49064), (2648, 30665), (3310, 24532), (6133, 13240), (6620, 12266)]