18729763

素因数分解:

${\mathrm{13}}^2\times {\mathrm{19}}^2\times {\mathrm{307}}^1$

素因数の和:371

約数の個数: 18

約数和(自身を含む): 21474684

約数和(自身を除く): 2744921

約数列:

[1, 13, 19, 169, 247, 307, 361, 3211, 3991, 4693, 5833, 51883, 61009, 75829, 110827, 985777, 1440751, 18729763]

約数ペア:

[(1, 18729763), (13, 1440751), (19, 985777), (169, 110827), (247, 75829), (307, 61009), (361, 51883), (3211, 5833), (3991, 4693)]