21998120

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{23911}}^1$

素因数の和:23945

約数の個数: 32

約数和(自身を含む): 51649920

約数和(自身を除く): 29651800

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 23911, 47822, 95644, 119555, 191288, 239110, 478220, 549953, 956440, 1099906, 2199812, 2749765, 4399624, 5499530, 10999060, 21998120]

約数ペア:

[(1, 21998120), (2, 10999060), (4, 5499530), (5, 4399624), (8, 2749765), (10, 2199812), (20, 1099906), (23, 956440), (40, 549953), (46, 478220), (92, 239110), (115, 191288), (184, 119555), (230, 95644), (460, 47822), (920, 23911)]