20882225

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 32581248

約数和(自身を除く): 11699023

約数列:

[1, 5, 7, 13, 25, 35, 65, 67, 91, 137, 175, 325, 335, 455, 469, 685, 871, 959, 1675, 1781, 2275, 2345, 3425, 4355, 4795, 6097, 8905, 9179, 11725, 12467, 21775, 23975, 30485, 44525, 45895, 62335, 64253, 119327, 152425, 229475, 311675, 321265, 596635, 835289, 1606325, 2983175, 4176445, 20882225]

約数ペア:

[(1, 20882225), (5, 4176445), (7, 2983175), (13, 1606325), (25, 835289), (35, 596635), (65, 321265), (67, 311675), (91, 229475), (137, 152425), (175, 119327), (325, 64253), (335, 62335), (455, 45895), (469, 44525), (685, 30485), (871, 23975), (959, 21775), (1675, 12467), (1781, 11725), (2275, 9179), (2345, 8905), (3425, 6097), (4355, 4795)]