278313931

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{191}}^1$

素因数の和:391

約数の個数: 32

約数和(自身を含む): 337379328

約数和(自身を除く): 59065397

約数列:

[1, 7, 43, 47, 103, 191, 301, 329, 721, 1337, 2021, 4429, 4841, 8213, 8977, 14147, 19673, 31003, 33887, 57491, 62839, 137711, 208163, 386011, 845939, 924631, 1457141, 2702077, 5921573, 6472417, 39759133, 278313931]

約数ペア:

[(1, 278313931), (7, 39759133), (43, 6472417), (47, 5921573), (103, 2702077), (191, 1457141), (301, 924631), (329, 845939), (721, 386011), (1337, 208163), (2021, 137711), (4429, 62839), (4841, 57491), (8213, 33887), (8977, 31003), (14147, 19673)]