1321997120

素因数分解:

$2^6\times 5^1\times {\mathrm{4131241}}^1$

素因数の和:4131258

約数の個数: 28

約数和(自身を含む): 3148006404

約数和(自身を除く): 1826009284

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 4131241, 8262482, 16524964, 20656205, 33049928, 41312410, 66099856, 82624820, 132199712, 165249640, 264399424, 330499280, 660998560, 1321997120]

約数ペア:

[(1, 1321997120), (2, 660998560), (4, 330499280), (5, 264399424), (8, 165249640), (10, 132199712), (16, 82624820), (20, 66099856), (32, 41312410), (40, 33049928), (64, 20656205), (80, 16524964), (160, 8262482), (320, 4131241)]