81384318

素因数分解:

$2^1\times 3^3\times {\mathrm{71}}^1\times {\mathrm{21227}}^1$

素因数の和:21309

約数の個数: 32

約数和(自身を含む): 183409920

約数和(自身を除く): 102025602

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 71, 142, 213, 426, 639, 1278, 1917, 3834, 21227, 42454, 63681, 127362, 191043, 382086, 573129, 1146258, 1507117, 3014234, 4521351, 9042702, 13564053, 27128106, 40692159, 81384318]

約数ペア:

[(1, 81384318), (2, 40692159), (3, 27128106), (6, 13564053), (9, 9042702), (18, 4521351), (27, 3014234), (54, 1507117), (71, 1146258), (142, 573129), (213, 382086), (426, 191043), (639, 127362), (1278, 63681), (1917, 42454), (3834, 21227)]