18578920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{14983}}^1$

素因数の和:15025

約数の個数: 32

約数和(自身を含む): 43153920

約数和(自身を除く): 24575000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 14983, 29966, 59932, 74915, 119864, 149830, 299660, 464473, 599320, 928946, 1857892, 2322365, 3715784, 4644730, 9289460, 18578920]

約数ペア:

[(1, 18578920), (2, 9289460), (4, 4644730), (5, 3715784), (8, 2322365), (10, 1857892), (20, 928946), (31, 599320), (40, 464473), (62, 299660), (124, 149830), (155, 119864), (248, 74915), (310, 59932), (620, 29966), (1240, 14983)]