18378381

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:194

約数の個数: 48

約数和(自身を含む): 30497280

約数和(自身を除く): 12118899

約数列:

[1, 3, 7, 21, 31, 37, 49, 93, 109, 111, 147, 217, 259, 327, 651, 763, 777, 1147, 1519, 1813, 2289, 3379, 3441, 4033, 4557, 5341, 5439, 8029, 10137, 12099, 16023, 23653, 24087, 28231, 56203, 70959, 84693, 125023, 165571, 168609, 197617, 375069, 496713, 592851, 875161, 2625483, 6126127, 18378381]

約数ペア:

[(1, 18378381), (3, 6126127), (7, 2625483), (21, 875161), (31, 592851), (37, 496713), (49, 375069), (93, 197617), (109, 168609), (111, 165571), (147, 125023), (217, 84693), (259, 70959), (327, 56203), (651, 28231), (763, 24087), (777, 23653), (1147, 16023), (1519, 12099), (1813, 10137), (2289, 8029), (3379, 5439), (3441, 5341), (4033, 4557)]