18877729

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{337}}^1$

素因数の和:520

約数の個数: 16

約数和(自身を含む): 21199360

約数和(自身を除く): 2321631

約数列:

[1, 13, 31, 139, 337, 403, 1807, 4309, 4381, 10447, 46843, 56017, 135811, 608959, 1452133, 18877729]

約数ペア:

[(1, 18877729), (13, 1452133), (31, 608959), (139, 135811), (337, 56017), (403, 46843), (1807, 10447), (4309, 4381)]