128260420

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{278827}}^1$

素因数の和:278859

約数の個数: 24

約数和(自身を含む): 281058624

約数和(自身を除く): 152798204

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 278827, 557654, 1115308, 1394135, 2788270, 5576540, 6413021, 12826042, 25652084, 32065105, 64130210, 128260420]

約数ペア:

[(1, 128260420), (2, 64130210), (4, 32065105), (5, 25652084), (10, 12826042), (20, 6413021), (23, 5576540), (46, 2788270), (92, 1394135), (115, 1115308), (230, 557654), (460, 278827)]