20518372225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{743}}^1\times {\mathrm{2741}}^1$

素因数の和:3538

約数の個数: 48

約数和(自身を含む): 28332186624

約数和(自身を除く): 7813814399

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 743, 775, 2015, 2741, 3715, 9659, 10075, 13705, 18575, 23033, 35633, 48295, 68525, 84971, 115165, 178165, 241475, 299429, 424855, 575825, 890825, 1104623, 1497145, 2036563, 2124275, 5523115, 7485725, 10182815, 26475319, 27615575, 50914075, 63133453, 132376595, 315667265, 661882975, 820734889, 1578336325, 4103674445, 20518372225]

約数ペア:

[(1, 20518372225), (5, 4103674445), (13, 1578336325), (25, 820734889), (31, 661882975), (65, 315667265), (155, 132376595), (325, 63133453), (403, 50914075), (743, 27615575), (775, 26475319), (2015, 10182815), (2741, 7485725), (3715, 5523115), (9659, 2124275), (10075, 2036563), (13705, 1497145), (18575, 1104623), (23033, 890825), (35633, 575825), (48295, 424855), (68525, 299429), (84971, 241475), (115165, 178165)]