20458792

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{181}}^1\times {\mathrm{199}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 39312000

約数和(自身を除く): 18853208

約数列:

[1, 2, 4, 8, 71, 142, 181, 199, 284, 362, 398, 568, 724, 796, 1448, 1592, 12851, 14129, 25702, 28258, 36019, 51404, 56516, 72038, 102808, 113032, 144076, 288152, 2557349, 5114698, 10229396, 20458792]

約数ペア:

[(1, 20458792), (2, 10229396), (4, 5114698), (8, 2557349), (71, 288152), (142, 144076), (181, 113032), (199, 102808), (284, 72038), (362, 56516), (398, 51404), (568, 36019), (724, 28258), (796, 25702), (1448, 14129), (1592, 12851)]