178013720

素因数分解:

$2^3\times 5^1\times {\mathrm{2011}}^1\times {\mathrm{2213}}^1$

素因数の和:4235

約数の個数: 32

約数和(自身を含む): 400911120

約数和(自身を除く): 222897400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2011, 2213, 4022, 4426, 8044, 8852, 10055, 11065, 16088, 17704, 20110, 22130, 40220, 44260, 80440, 88520, 4450343, 8900686, 17801372, 22251715, 35602744, 44503430, 89006860, 178013720]

約数ペア:

[(1, 178013720), (2, 89006860), (4, 44503430), (5, 35602744), (8, 22251715), (10, 17801372), (20, 8900686), (40, 4450343), (2011, 88520), (2213, 80440), (4022, 44260), (4426, 40220), (8044, 22130), (8852, 20110), (10055, 17704), (11065, 16088)]