20122969420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{419}}^1\times {\mathrm{26981}}^1$

素因数の和:27498

約数の個数: 48

約数和(自身を含む): 42836623200

約数和(自身を除く): 22713653780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 419, 445, 838, 890, 1676, 1780, 2095, 4190, 8380, 26981, 37291, 53962, 74582, 107924, 134905, 149164, 186455, 269810, 372910, 539620, 745820, 2401309, 4802618, 9605236, 11305039, 12006545, 22610078, 24013090, 45220156, 48026180, 56525195, 113050390, 226100780, 1006148471, 2012296942, 4024593884, 5030742355, 10061484710, 20122969420]

約数ペア:

[(1, 20122969420), (2, 10061484710), (4, 5030742355), (5, 4024593884), (10, 2012296942), (20, 1006148471), (89, 226100780), (178, 113050390), (356, 56525195), (419, 48026180), (445, 45220156), (838, 24013090), (890, 22610078), (1676, 12006545), (1780, 11305039), (2095, 9605236), (4190, 4802618), (8380, 2401309), (26981, 745820), (37291, 539620), (53962, 372910), (74582, 269810), (107924, 186455), (134905, 149164)]