16781609

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{251}}^1$

素因数の和:440

約数の個数: 16

約数和(自身を含む): 18768960

約数和(自身を除く): 1987351

約数列:

[1, 13, 37, 139, 251, 481, 1807, 3263, 5143, 9287, 34889, 66859, 120731, 453557, 1290893, 16781609]

約数ペア:

[(1, 16781609), (13, 1290893), (37, 453557), (139, 120731), (251, 66859), (481, 34889), (1807, 9287), (3263, 5143)]