20897410

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67411}}^1$

素因数の和:67449

約数の個数: 16

約数和(自身を含む): 38829312

約数和(自身を除く): 17931902

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 67411, 134822, 337055, 674110, 2089741, 4179482, 10448705, 20897410]

約数ペア:

[(1, 20897410), (2, 10448705), (5, 4179482), (10, 2089741), (31, 674110), (62, 337055), (155, 134822), (310, 67411)]