20266995

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{769}}^1$

素因数の和:1035

約数の個数: 32

約数和(自身を含む): 37255680

約数和(自身を除く): 16988685

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 251, 753, 769, 1255, 1757, 2307, 3765, 3845, 5271, 5383, 8785, 11535, 16149, 26355, 26915, 80745, 193019, 579057, 965095, 1351133, 2895285, 4053399, 6755665, 20266995]

約数ペア:

[(1, 20266995), (3, 6755665), (5, 4053399), (7, 2895285), (15, 1351133), (21, 965095), (35, 579057), (105, 193019), (251, 80745), (753, 26915), (769, 26355), (1255, 16149), (1757, 11535), (2307, 8785), (3765, 5383), (3845, 5271)]