280803020

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{66541}}^1$

素因数の和:66761

約数の個数: 24

約数和(自身を含む): 592489968

約数和(自身を除く): 311686948

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 66541, 133082, 266164, 332705, 665410, 1330820, 14040151, 28080302, 56160604, 70200755, 140401510, 280803020]

約数ペア:

[(1, 280803020), (2, 140401510), (4, 70200755), (5, 56160604), (10, 28080302), (20, 14040151), (211, 1330820), (422, 665410), (844, 332705), (1055, 266164), (2110, 133082), (4220, 66541)]