81394520

素因数分解:

$2^3\times 5^1\times {\mathrm{1181}}^1\times {\mathrm{1723}}^1$

素因数の和:2915

約数の個数: 32

約数和(自身を含む): 183399120

約数和(自身を除く): 102004600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1181, 1723, 2362, 3446, 4724, 5905, 6892, 8615, 9448, 11810, 13784, 17230, 23620, 34460, 47240, 68920, 2034863, 4069726, 8139452, 10174315, 16278904, 20348630, 40697260, 81394520]

約数ペア:

[(1, 81394520), (2, 40697260), (4, 20348630), (5, 16278904), (8, 10174315), (10, 8139452), (20, 4069726), (40, 2034863), (1181, 68920), (1723, 47240), (2362, 34460), (3446, 23620), (4724, 17230), (5905, 13784), (6892, 11810), (8615, 9448)]