656420

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1427}}^1$

素因数の和:1459

約数の個数: 24

約数和(自身を含む): 1439424

約数和(自身を除く): 783004

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 1427, 2854, 5708, 7135, 14270, 28540, 32821, 65642, 131284, 164105, 328210, 656420]

約数ペア:

[(1, 656420), (2, 328210), (4, 164105), (5, 131284), (10, 65642), (20, 32821), (23, 28540), (46, 14270), (92, 7135), (115, 5708), (230, 2854), (460, 1427)]