20347639120

素因数分解:

$2^4\times 5^1\times {\mathrm{6271}}^1\times {\mathrm{40559}}^1$

素因数の和:46843

約数の個数: 40

約数和(自身を含む): 47316971520

約数和(自身を除く): 26969332400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 6271, 12542, 25084, 31355, 40559, 50168, 62710, 81118, 100336, 125420, 162236, 202795, 250840, 324472, 405590, 501680, 648944, 811180, 1622360, 3244720, 254345489, 508690978, 1017381956, 1271727445, 2034763912, 2543454890, 4069527824, 5086909780, 10173819560, 20347639120]

約数ペア:

[(1, 20347639120), (2, 10173819560), (4, 5086909780), (5, 4069527824), (8, 2543454890), (10, 2034763912), (16, 1271727445), (20, 1017381956), (40, 508690978), (80, 254345489), (6271, 3244720), (12542, 1622360), (25084, 811180), (31355, 648944), (40559, 501680), (50168, 405590), (62710, 324472), (81118, 250840), (100336, 202795), (125420, 162236)]