98765560

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{15727}}^1$

素因数の和:15895

約数の個数: 32

約数和(自身を含む): 223652160

約数和(自身を除く): 124886600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 15727, 31454, 62908, 78635, 125816, 157270, 314540, 629080, 2469139, 4938278, 9876556, 12345695, 19753112, 24691390, 49382780, 98765560]

約数ペア:

[(1, 98765560), (2, 49382780), (4, 24691390), (5, 19753112), (8, 12345695), (10, 9876556), (20, 4938278), (40, 2469139), (157, 629080), (314, 314540), (628, 157270), (785, 125816), (1256, 78635), (1570, 62908), (3140, 31454), (6280, 15727)]