18750291

素因数分解:

$3^1\times 7^2\times {\mathrm{229}}^1\times {\mathrm{557}}^1$

素因数の和:803

約数の個数: 24

約数和(自身を含む): 29261520

約数和(自身を除く): 10511229

約数列:

[1, 3, 7, 21, 49, 147, 229, 557, 687, 1603, 1671, 3899, 4809, 11221, 11697, 27293, 33663, 81879, 127553, 382659, 892871, 2678613, 6250097, 18750291]

約数ペア:

[(1, 18750291), (3, 6250097), (7, 2678613), (21, 892871), (49, 382659), (147, 127553), (229, 81879), (557, 33663), (687, 27293), (1603, 11697), (1671, 11221), (3899, 4809)]