19721040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{82171}}^1$

素因数の和:82187

約数の個数: 40

約数和(自身を含む): 61135968

約数和(自身を除く): 41414928

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 82171, 164342, 246513, 328684, 410855, 493026, 657368, 821710, 986052, 1232565, 1314736, 1643420, 1972104, 2465130, 3286840, 3944208, 4930260, 6573680, 9860520, 19721040]

約数ペア:

[(1, 19721040), (2, 9860520), (3, 6573680), (4, 4930260), (5, 3944208), (6, 3286840), (8, 2465130), (10, 1972104), (12, 1643420), (15, 1314736), (16, 1232565), (20, 986052), (24, 821710), (30, 657368), (40, 493026), (48, 410855), (60, 328684), (80, 246513), (120, 164342), (240, 82171)]