19971560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71327}}^1$

素因数の和:71345

約数の個数: 32

約数和(自身を含む): 51356160

約数和(自身を除く): 31384600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71327, 142654, 285308, 356635, 499289, 570616, 713270, 998578, 1426540, 1997156, 2496445, 2853080, 3994312, 4992890, 9985780, 19971560]

約数ペア:

[(1, 19971560), (2, 9985780), (4, 4992890), (5, 3994312), (7, 2853080), (8, 2496445), (10, 1997156), (14, 1426540), (20, 998578), (28, 713270), (35, 570616), (40, 499289), (56, 356635), (70, 285308), (140, 142654), (280, 71327)]