19910540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76579}}^1$

素因数の和:76601

約数の個数: 24

約数和(自身を含む): 45029040

約数和(自身を除く): 25118500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76579, 153158, 306316, 382895, 765790, 995527, 1531580, 1991054, 3982108, 4977635, 9955270, 19910540]

約数ペア:

[(1, 19910540), (2, 9955270), (4, 4977635), (5, 3982108), (10, 1991054), (13, 1531580), (20, 995527), (26, 765790), (52, 382895), (65, 306316), (130, 153158), (260, 76579)]