128360804920

素因数分解:

$2^3\times 5^1\times {\mathrm{3209020123}}^1$

素因数の和:3209020134

約数の個数: 16

約数和(自身を含む): 288811811160

約数和(自身を除く): 160451006240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3209020123, 6418040246, 12836080492, 16045100615, 25672160984, 32090201230, 64180402460, 128360804920]

約数ペア:

[(1, 128360804920), (2, 64180402460), (4, 32090201230), (5, 25672160984), (8, 16045100615), (10, 12836080492), (20, 6418040246), (40, 3209020123)]