81038680

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{13417}}^1$

素因数の和:13579

約数の個数: 32

約数和(自身を含む): 183558240

約数和(自身を除く): 102519560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 3020, 6040, 13417, 26834, 53668, 67085, 107336, 134170, 268340, 536680, 2025967, 4051934, 8103868, 10129835, 16207736, 20259670, 40519340, 81038680]

約数ペア:

[(1, 81038680), (2, 40519340), (4, 20259670), (5, 16207736), (8, 10129835), (10, 8103868), (20, 4051934), (40, 2025967), (151, 536680), (302, 268340), (604, 134170), (755, 107336), (1208, 67085), (1510, 53668), (3020, 26834), (6040, 13417)]