81700

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:76

約数の個数: 36

約数和(自身を含む): 190960

約数和(自身を除く): 109260

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 43, 50, 76, 86, 95, 100, 172, 190, 215, 380, 430, 475, 817, 860, 950, 1075, 1634, 1900, 2150, 3268, 4085, 4300, 8170, 16340, 20425, 40850, 81700]

約数ペア:

[(1, 81700), (2, 40850), (4, 20425), (5, 16340), (10, 8170), (19, 4300), (20, 4085), (25, 3268), (38, 2150), (43, 1900), (50, 1634), (76, 1075), (86, 950), (95, 860), (100, 817), (172, 475), (190, 430), (215, 380)]