28393113

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 44513280

約数和(自身を除く): 16120167

約数列:

[1, 3, 7, 21, 71, 137, 139, 213, 411, 417, 497, 959, 973, 1491, 2877, 2919, 9727, 9869, 19043, 29181, 29607, 57129, 68089, 69083, 133301, 204267, 207249, 399903, 1352053, 4056159, 9464371, 28393113]

約数ペア:

[(1, 28393113), (3, 9464371), (7, 4056159), (21, 1352053), (71, 399903), (137, 207249), (139, 204267), (213, 133301), (411, 69083), (417, 68089), (497, 57129), (959, 29607), (973, 29181), (1491, 19043), (2877, 9869), (2919, 9727)]