2891931

素因数分解:

$3^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{191}}^1$

素因数の和:311

約数の個数: 24

約数和(自身を含む): 4552704

約数和(自身を除く): 1660773

約数列:

[1, 3, 7, 21, 49, 103, 147, 191, 309, 573, 721, 1337, 2163, 4011, 5047, 9359, 15141, 19673, 28077, 59019, 137711, 413133, 963977, 2891931]

約数ペア:

[(1, 2891931), (3, 963977), (7, 413133), (21, 137711), (49, 59019), (103, 28077), (147, 19673), (191, 15141), (309, 9359), (573, 5047), (721, 4011), (1337, 2163)]