15731919

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{397}}^1$

素因数の和:464

約数の個数: 48

約数和(自身を含む): 28312128

約数和(自身を除く): 12580209

約数列:

[1, 3, 7, 9, 17, 21, 37, 51, 63, 111, 119, 153, 259, 333, 357, 397, 629, 777, 1071, 1191, 1887, 2331, 2779, 3573, 4403, 5661, 6749, 8337, 13209, 14689, 20247, 25011, 39627, 44067, 47243, 60741, 102823, 132201, 141729, 249713, 308469, 425187, 749139, 925407, 1747991, 2247417, 5243973, 15731919]

約数ペア:

[(1, 15731919), (3, 5243973), (7, 2247417), (9, 1747991), (17, 925407), (21, 749139), (37, 425187), (51, 308469), (63, 249713), (111, 141729), (119, 132201), (153, 102823), (259, 60741), (333, 47243), (357, 44067), (397, 39627), (629, 25011), (777, 20247), (1071, 14689), (1191, 13209), (1887, 8337), (2331, 6749), (2779, 5661), (3573, 4403)]