20681040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{86171}}^1$

素因数の和:86187

約数の個数: 40

約数和(自身を含む): 64111968

約数和(自身を除く): 43430928

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 86171, 172342, 258513, 344684, 430855, 517026, 689368, 861710, 1034052, 1292565, 1378736, 1723420, 2068104, 2585130, 3446840, 4136208, 5170260, 6893680, 10340520, 20681040]

約数ペア:

[(1, 20681040), (2, 10340520), (3, 6893680), (4, 5170260), (5, 4136208), (6, 3446840), (8, 2585130), (10, 2068104), (12, 1723420), (15, 1378736), (16, 1292565), (20, 1034052), (24, 861710), (30, 689368), (40, 517026), (48, 430855), (60, 344684), (80, 258513), (120, 172342), (240, 86171)]