21794420

素因数分解:

$2^2\times 5^1\times {\mathrm{997}}^1\times {\mathrm{1093}}^1$

素因数の和:2099

約数の個数: 24

約数和(自身を含む): 45856104

約数和(自身を除く): 24061684

約数列:

[1, 2, 4, 5, 10, 20, 997, 1093, 1994, 2186, 3988, 4372, 4985, 5465, 9970, 10930, 19940, 21860, 1089721, 2179442, 4358884, 5448605, 10897210, 21794420]

約数ペア:

[(1, 21794420), (2, 10897210), (4, 5448605), (5, 4358884), (10, 2179442), (20, 1089721), (997, 21860), (1093, 19940), (1994, 10930), (2186, 9970), (3988, 5465), (4372, 4985)]