25420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:81

約数の個数: 24

約数和(自身を含む): 56448

約数和(自身を除く): 31028

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 620, 820, 1271, 2542, 5084, 6355, 12710, 25420]

約数ペア:

[(1, 25420), (2, 12710), (4, 6355), (5, 5084), (10, 2542), (20, 1271), (31, 820), (41, 620), (62, 410), (82, 310), (124, 205), (155, 164)]