217620123

素因数分解:

$3^1\times 7^3\times {\mathrm{61}}^1\times {\mathrm{3467}}^1$

素因数の和:3552

約数の個数: 32

約数和(自身を含む): 344025600

約数和(自身を除く): 126405477

約数列:

[1, 3, 7, 21, 49, 61, 147, 183, 343, 427, 1029, 1281, 2989, 3467, 8967, 10401, 20923, 24269, 62769, 72807, 169883, 211487, 509649, 634461, 1189181, 1480409, 3567543, 4441227, 10362863, 31088589, 72540041, 217620123]

約数ペア:

[(1, 217620123), (3, 72540041), (7, 31088589), (21, 10362863), (49, 4441227), (61, 3567543), (147, 1480409), (183, 1189181), (343, 634461), (427, 509649), (1029, 211487), (1281, 169883), (2989, 72807), (3467, 62769), (8967, 24269), (10401, 20923)]