163967975

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{1999}}^1$

素因数の和:2219

約数の個数: 24

約数和(自身を含む): 216504000

約数和(自身を除く): 52536025

約数列:

[1, 5, 17, 25, 85, 193, 425, 965, 1999, 3281, 4825, 9995, 16405, 33983, 49975, 82025, 169915, 385807, 849575, 1929035, 6558719, 9645175, 32793595, 163967975]

約数ペア:

[(1, 163967975), (5, 32793595), (17, 9645175), (25, 6558719), (85, 1929035), (193, 849575), (425, 385807), (965, 169915), (1999, 82025), (3281, 49975), (4825, 33983), (9995, 16405)]