68440520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{39791}}^1$

素因数の和:39845

約数の個数: 32

約数和(自身を含む): 157576320

約数和(自身を除く): 89135800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 39791, 79582, 159164, 198955, 318328, 397910, 795820, 1591640, 1711013, 3422026, 6844052, 8555065, 13688104, 17110130, 34220260, 68440520]

約数ペア:

[(1, 68440520), (2, 34220260), (4, 17110130), (5, 13688104), (8, 8555065), (10, 6844052), (20, 3422026), (40, 1711013), (43, 1591640), (86, 795820), (172, 397910), (215, 318328), (344, 198955), (430, 159164), (860, 79582), (1720, 39791)]