290487920

素因数分解:

$2^4\times 5^1\times {\mathrm{211}}^1\times {\mathrm{17209}}^1$

素因数の和:17433

約数の個数: 40

約数和(自身を含む): 678624720

約数和(自身を除く): 388136800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211, 422, 844, 1055, 1688, 2110, 3376, 4220, 8440, 16880, 17209, 34418, 68836, 86045, 137672, 172090, 275344, 344180, 688360, 1376720, 3631099, 7262198, 14524396, 18155495, 29048792, 36310990, 58097584, 72621980, 145243960, 290487920]

約数ペア:

[(1, 290487920), (2, 145243960), (4, 72621980), (5, 58097584), (8, 36310990), (10, 29048792), (16, 18155495), (20, 14524396), (40, 7262198), (80, 3631099), (211, 1376720), (422, 688360), (844, 344180), (1055, 275344), (1688, 172090), (2110, 137672), (3376, 86045), (4220, 68836), (8440, 34418), (16880, 17209)]