19558040

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4327}}^1$

素因数の和:4451

約数の個数: 32

約数和(自身を含む): 44405280

約数和(自身を除く): 24847240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4327, 4520, 8654, 17308, 21635, 34616, 43270, 86540, 173080, 488951, 977902, 1955804, 2444755, 3911608, 4889510, 9779020, 19558040]

約数ペア:

[(1, 19558040), (2, 9779020), (4, 4889510), (5, 3911608), (8, 2444755), (10, 1955804), (20, 977902), (40, 488951), (113, 173080), (226, 86540), (452, 43270), (565, 34616), (904, 21635), (1130, 17308), (2260, 8654), (4327, 4520)]