18786117

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{239}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 30412800

約数和(自身を除く): 11626683

約数列:

[1, 3, 7, 19, 21, 57, 133, 197, 239, 399, 591, 717, 1379, 1673, 3743, 4137, 4541, 5019, 11229, 13623, 26201, 31787, 47083, 78603, 95361, 141249, 329581, 894577, 988743, 2683731, 6262039, 18786117]

約数ペア:

[(1, 18786117), (3, 6262039), (7, 2683731), (19, 988743), (21, 894577), (57, 329581), (133, 141249), (197, 95361), (239, 78603), (399, 47083), (591, 31787), (717, 26201), (1379, 13623), (1673, 11229), (3743, 5019), (4137, 4541)]