20985874

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1721}}^1$

素因数の和:1810

約数の個数: 32

約数和(自身を含む): 39344256

約数和(自身を除く): 18358382

約数列:

[1, 2, 7, 13, 14, 26, 67, 91, 134, 182, 469, 871, 938, 1721, 1742, 3442, 6097, 12047, 12194, 22373, 24094, 44746, 115307, 156611, 230614, 313222, 807149, 1498991, 1614298, 2997982, 10492937, 20985874]

約数ペア:

[(1, 20985874), (2, 10492937), (7, 2997982), (13, 1614298), (14, 1498991), (26, 807149), (67, 313222), (91, 230614), (134, 156611), (182, 115307), (469, 44746), (871, 24094), (938, 22373), (1721, 12194), (1742, 12047), (3442, 6097)]