21607880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77171}}^1$

素因数の和:77189

約数の個数: 32

約数和(自身を含む): 55563840

約数和(自身を除く): 33955960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77171, 154342, 308684, 385855, 540197, 617368, 771710, 1080394, 1543420, 2160788, 2700985, 3086840, 4321576, 5401970, 10803940, 21607880]

約数ペア:

[(1, 21607880), (2, 10803940), (4, 5401970), (5, 4321576), (7, 3086840), (8, 2700985), (10, 2160788), (14, 1543420), (20, 1080394), (28, 771710), (35, 617368), (40, 540197), (56, 385855), (70, 308684), (140, 154342), (280, 77171)]