128230280

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{23063}}^1$

素因数の和:23213

約数の個数: 32

約数和(自身を含む): 290606400

約数和(自身を除く): 162376120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 23063, 46126, 92252, 115315, 184504, 230630, 461260, 922520, 3205757, 6411514, 12823028, 16028785, 25646056, 32057570, 64115140, 128230280]

約数ペア:

[(1, 128230280), (2, 64115140), (4, 32057570), (5, 25646056), (8, 16028785), (10, 12823028), (20, 6411514), (40, 3205757), (139, 922520), (278, 461260), (556, 230630), (695, 184504), (1112, 115315), (1390, 92252), (2780, 46126), (5560, 23063)]