285580

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:249

約数の個数: 24

約数和(自身を含む): 609840

約数和(自身を除く): 324260

約数列:

[1, 2, 4, 5, 10, 20, 109, 131, 218, 262, 436, 524, 545, 655, 1090, 1310, 2180, 2620, 14279, 28558, 57116, 71395, 142790, 285580]

約数ペア:

[(1, 285580), (2, 142790), (4, 71395), (5, 57116), (10, 28558), (20, 14279), (109, 2620), (131, 2180), (218, 1310), (262, 1090), (436, 655), (524, 545)]