19810550

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{12781}}^1$

素因数の和:12824

約数の個数: 24

約数和(自身を含む): 38039232

約数和(自身を除く): 18228682

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 155, 310, 775, 1550, 12781, 25562, 63905, 127810, 319525, 396211, 639050, 792422, 1981055, 3962110, 9905275, 19810550]

約数ペア:

[(1, 19810550), (2, 9905275), (5, 3962110), (10, 1981055), (25, 792422), (31, 639050), (50, 396211), (62, 319525), (155, 127810), (310, 63905), (775, 25562), (1550, 12781)]