123428840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181513}}^1$

素因数の和:181541

約数の個数: 32

約数和(自身を含む): 294052680

約数和(自身を除く): 170623840

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 181513, 363026, 726052, 907565, 1452104, 1815130, 3085721, 3630260, 6171442, 7260520, 12342884, 15428605, 24685768, 30857210, 61714420, 123428840]

約数ペア:

[(1, 123428840), (2, 61714420), (4, 30857210), (5, 24685768), (8, 15428605), (10, 12342884), (17, 7260520), (20, 6171442), (34, 3630260), (40, 3085721), (68, 1815130), (85, 1452104), (136, 907565), (170, 726052), (340, 363026), (680, 181513)]