61289320

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{6871}}^1$

素因数の和:7105

約数の個数: 32

約数和(自身を含む): 138539520

約数和(自身を除く): 77250200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 6871, 8920, 13742, 27484, 34355, 54968, 68710, 137420, 274840, 1532233, 3064466, 6128932, 7661165, 12257864, 15322330, 30644660, 61289320]

約数ペア:

[(1, 61289320), (2, 30644660), (4, 15322330), (5, 12257864), (8, 7661165), (10, 6128932), (20, 3064466), (40, 1532233), (223, 274840), (446, 137420), (892, 68710), (1115, 54968), (1784, 34355), (2230, 27484), (4460, 13742), (6871, 8920)]