81373360

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^2\times {\mathrm{743}}^1$

素因数の和:830

約数の個数: 60

約数和(自身を含む): 194706288

約数和(自身を除く): 113332928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 743, 1369, 1480, 1486, 2738, 2960, 2972, 3715, 5476, 5944, 6845, 7430, 10952, 11888, 13690, 14860, 21904, 27380, 27491, 29720, 54760, 54982, 59440, 109520, 109964, 137455, 219928, 274910, 439856, 549820, 1017167, 1099640, 2034334, 2199280, 4068668, 5085835, 8137336, 10171670, 16274672, 20343340, 40686680, 81373360]

約数ペア:

[(1, 81373360), (2, 40686680), (4, 20343340), (5, 16274672), (8, 10171670), (10, 8137336), (16, 5085835), (20, 4068668), (37, 2199280), (40, 2034334), (74, 1099640), (80, 1017167), (148, 549820), (185, 439856), (296, 274910), (370, 219928), (592, 137455), (740, 109964), (743, 109520), (1369, 59440), (1480, 54982), (1486, 54760), (2738, 29720), (2960, 27491), (2972, 27380), (3715, 21904), (5476, 14860), (5944, 13690), (6845, 11888), (7430, 10952)]