321001040

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{28867}}^1$

素因数の和:29019

約数の個数: 40

約数和(自身を含む): 751722720

約数和(自身を除く): 430721680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 2224, 2780, 5560, 11120, 28867, 57734, 115468, 144335, 230936, 288670, 461872, 577340, 1154680, 2309360, 4012513, 8025026, 16050052, 20062565, 32100104, 40125130, 64200208, 80250260, 160500520, 321001040]

約数ペア:

[(1, 321001040), (2, 160500520), (4, 80250260), (5, 64200208), (8, 40125130), (10, 32100104), (16, 20062565), (20, 16050052), (40, 8025026), (80, 4012513), (139, 2309360), (278, 1154680), (556, 577340), (695, 461872), (1112, 288670), (1390, 230936), (2224, 144335), (2780, 115468), (5560, 57734), (11120, 28867)]