18219873

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{179}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 28892160

約数和(自身を除く): 10672287

約数列:

[1, 3, 7, 21, 37, 111, 131, 179, 259, 393, 537, 777, 917, 1253, 2751, 3759, 4847, 6623, 14541, 19869, 23449, 33929, 46361, 70347, 101787, 139083, 164143, 492429, 867613, 2602839, 6073291, 18219873]

約数ペア:

[(1, 18219873), (3, 6073291), (7, 2602839), (21, 867613), (37, 492429), (111, 164143), (131, 139083), (179, 101787), (259, 70347), (393, 46361), (537, 33929), (777, 23449), (917, 19869), (1253, 14541), (2751, 6623), (3759, 4847)]