19921040

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5791}}^1$

素因数の和:5847

約数の個数: 40

約数和(自身を含む): 47401728

約数和(自身を除く): 27480688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5791, 11582, 23164, 28955, 46328, 57910, 92656, 115820, 231640, 249013, 463280, 498026, 996052, 1245065, 1992104, 2490130, 3984208, 4980260, 9960520, 19921040]

約数ペア:

[(1, 19921040), (2, 9960520), (4, 4980260), (5, 3984208), (8, 2490130), (10, 1992104), (16, 1245065), (20, 996052), (40, 498026), (43, 463280), (80, 249013), (86, 231640), (172, 115820), (215, 92656), (344, 57910), (430, 46328), (688, 28955), (860, 23164), (1720, 11582), (3440, 5791)]