128208040

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{23059}}^1$

素因数の和:23209

約数の個数: 32

約数和(自身を含む): 290556000

約数和(自身を除く): 162347960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 23059, 46118, 92236, 115295, 184472, 230590, 461180, 922360, 3205201, 6410402, 12820804, 16026005, 25641608, 32052010, 64104020, 128208040]

約数ペア:

[(1, 128208040), (2, 64104020), (4, 32052010), (5, 25641608), (8, 16026005), (10, 12820804), (20, 6410402), (40, 3205201), (139, 922360), (278, 461180), (556, 230590), (695, 184472), (1112, 115295), (1390, 92236), (2780, 46118), (5560, 23059)]