20861680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37253}}^1$

素因数の和:37273

約数の個数: 40

約数和(自身を含む): 55433952

約数和(自身を除く): 34572272

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37253, 74506, 149012, 186265, 260771, 298024, 372530, 521542, 596048, 745060, 1043084, 1303855, 1490120, 2086168, 2607710, 2980240, 4172336, 5215420, 10430840, 20861680]

約数ペア:

[(1, 20861680), (2, 10430840), (4, 5215420), (5, 4172336), (7, 2980240), (8, 2607710), (10, 2086168), (14, 1490120), (16, 1303855), (20, 1043084), (28, 745060), (35, 596048), (40, 521542), (56, 372530), (70, 298024), (80, 260771), (112, 186265), (140, 149012), (280, 74506), (560, 37253)]