71780180

素因数分解:

$2^2\times 5^1\times {\mathrm{1723}}^1\times {\mathrm{2083}}^1$

素因数の和:3815

約数の個数: 24

約数和(自身を含む): 150898272

約数和(自身を除く): 79118092

約数列:

[1, 2, 4, 5, 10, 20, 1723, 2083, 3446, 4166, 6892, 8332, 8615, 10415, 17230, 20830, 34460, 41660, 3589009, 7178018, 14356036, 17945045, 35890090, 71780180]

約数ペア:

[(1, 71780180), (2, 35890090), (4, 17945045), (5, 14356036), (10, 7178018), (20, 3589009), (1723, 41660), (2083, 34460), (3446, 20830), (4166, 17230), (6892, 10415), (8332, 8615)]