31425471

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{331}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 57178368

約数和(自身を除く): 25752897

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 137, 231, 331, 411, 693, 959, 993, 1233, 1507, 2317, 2877, 2979, 3641, 4521, 6951, 8631, 10549, 10923, 13563, 20853, 25487, 31647, 32769, 45347, 76461, 94941, 136041, 229383, 317429, 408123, 498817, 952287, 1496451, 2856861, 3491719, 4489353, 10475157, 31425471]

約数ペア:

[(1, 31425471), (3, 10475157), (7, 4489353), (9, 3491719), (11, 2856861), (21, 1496451), (33, 952287), (63, 498817), (77, 408123), (99, 317429), (137, 229383), (231, 136041), (331, 94941), (411, 76461), (693, 45347), (959, 32769), (993, 31647), (1233, 25487), (1507, 20853), (2317, 13563), (2877, 10923), (2979, 10549), (3641, 8631), (4521, 6951)]