2491780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4019}}^1$

素因数の和:4059

約数の個数: 24

約数和(自身を含む): 5402880

約数和(自身を除く): 2911100

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 4019, 8038, 16076, 20095, 40190, 80380, 124589, 249178, 498356, 622945, 1245890, 2491780]

約数ペア:

[(1, 2491780), (2, 1245890), (4, 622945), (5, 498356), (10, 249178), (20, 124589), (31, 80380), (62, 40190), (124, 20095), (155, 16076), (310, 8038), (620, 4019)]