251199221

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{151}}^1\times {\mathrm{181}}^1$

素因数の和:453

約数の個数: 32

約数和(自身を含む): 316033536

約数和(自身を除く): 64834315

約数列:

[1, 7, 13, 91, 101, 151, 181, 707, 1057, 1267, 1313, 1963, 2353, 9191, 13741, 15251, 16471, 18281, 27331, 106757, 127967, 191317, 198263, 237653, 355303, 1387841, 1663571, 2487121, 2760431, 19323017, 35885603, 251199221]

約数ペア:

[(1, 251199221), (7, 35885603), (13, 19323017), (91, 2760431), (101, 2487121), (151, 1663571), (181, 1387841), (707, 355303), (1057, 237653), (1267, 198263), (1313, 191317), (1963, 127967), (2353, 106757), (9191, 27331), (13741, 18281), (15251, 16471)]