2181725

素因数分解:

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

素因数の和:174

約数の個数: 36

約数和(自身を含む): 3413844

約数和(自身を除く): 1232119

約数列:

[1, 5, 7, 13, 25, 35, 49, 65, 91, 137, 175, 245, 325, 455, 637, 685, 959, 1225, 1781, 2275, 3185, 3425, 4795, 6713, 8905, 12467, 15925, 23975, 33565, 44525, 62335, 87269, 167825, 311675, 436345, 2181725]

約数ペア:

[(1, 2181725), (5, 436345), (7, 311675), (13, 167825), (25, 87269), (35, 62335), (49, 44525), (65, 33565), (91, 23975), (137, 15925), (175, 12467), (245, 8905), (325, 6713), (455, 4795), (637, 3425), (685, 3185), (959, 2275), (1225, 1781)]