28222760

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{17209}}^1$

素因数の和:17261

約数の個数: 32

約数和(自身を含む): 65053800

約数和(自身を除く): 36831040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 17209, 34418, 68836, 86045, 137672, 172090, 344180, 688360, 705569, 1411138, 2822276, 3527845, 5644552, 7055690, 14111380, 28222760]

約数ペア:

[(1, 28222760), (2, 14111380), (4, 7055690), (5, 5644552), (8, 3527845), (10, 2822276), (20, 1411138), (40, 705569), (41, 688360), (82, 344180), (164, 172090), (205, 137672), (328, 86045), (410, 68836), (820, 34418), (1640, 17209)]