137221720

素因数分解:

$2^3\times 5^1\times {\mathrm{971}}^1\times {\mathrm{3533}}^1$

素因数の和:4515

約数の個数: 32

約数和(自身を含む): 309154320

約数和(自身を除く): 171932600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 971, 1942, 3533, 3884, 4855, 7066, 7768, 9710, 14132, 17665, 19420, 28264, 35330, 38840, 70660, 141320, 3430543, 6861086, 13722172, 17152715, 27444344, 34305430, 68610860, 137221720]

約数ペア:

[(1, 137221720), (2, 68610860), (4, 34305430), (5, 27444344), (8, 17152715), (10, 13722172), (20, 6861086), (40, 3430543), (971, 141320), (1942, 70660), (3533, 38840), (3884, 35330), (4855, 28264), (7066, 19420), (7768, 17665), (9710, 14132)]