138392560

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{8693}}^1$

素因数の和:8905

約数の個数: 40

約数和(自身を含む): 323416800

約数和(自身を除く): 185024240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 7960, 8693, 15920, 17386, 34772, 43465, 69544, 86930, 139088, 173860, 347720, 695440, 1729907, 3459814, 6919628, 8649535, 13839256, 17299070, 27678512, 34598140, 69196280, 138392560]

約数ペア:

[(1, 138392560), (2, 69196280), (4, 34598140), (5, 27678512), (8, 17299070), (10, 13839256), (16, 8649535), (20, 6919628), (40, 3459814), (80, 1729907), (199, 695440), (398, 347720), (796, 173860), (995, 139088), (1592, 86930), (1990, 69544), (3184, 43465), (3980, 34772), (7960, 17386), (8693, 15920)]