19481020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2417}}^1$

素因数の和:2470

約数の個数: 48

約数和(自身を含む): 45497088

約数和(自身を除く): 26016068

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 2417, 4030, 4834, 8060, 9668, 12085, 24170, 31421, 48340, 62842, 74927, 125684, 149854, 157105, 299708, 314210, 374635, 628420, 749270, 974051, 1498540, 1948102, 3896204, 4870255, 9740510, 19481020]

約数ペア:

[(1, 19481020), (2, 9740510), (4, 4870255), (5, 3896204), (10, 1948102), (13, 1498540), (20, 974051), (26, 749270), (31, 628420), (52, 374635), (62, 314210), (65, 299708), (124, 157105), (130, 149854), (155, 125684), (260, 74927), (310, 62842), (403, 48340), (620, 31421), (806, 24170), (1612, 12085), (2015, 9668), (2417, 8060), (4030, 4834)]