20009890628

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{820481}}^1$

素因数の和:820572

約数の個数: 48

約数和(自身を含む): 43741536384

約数和(自身を除く): 23731645756

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 67, 91, 134, 182, 268, 364, 469, 871, 938, 1742, 1876, 3484, 6097, 12194, 24388, 820481, 1640962, 3281924, 5743367, 10666253, 11486734, 21332506, 22973468, 42665012, 54972227, 74663771, 109944454, 149327542, 219888908, 298655084, 384805589, 714638951, 769611178, 1429277902, 1539222356, 2858555804, 5002472657, 10004945314, 20009890628]

約数ペア:

[(1, 20009890628), (2, 10004945314), (4, 5002472657), (7, 2858555804), (13, 1539222356), (14, 1429277902), (26, 769611178), (28, 714638951), (52, 384805589), (67, 298655084), (91, 219888908), (134, 149327542), (182, 109944454), (268, 74663771), (364, 54972227), (469, 42665012), (871, 22973468), (938, 21332506), (1742, 11486734), (1876, 10666253), (3484, 5743367), (6097, 3281924), (12194, 1640962), (24388, 820481)]