21036700

素因数分解:

$2^2\times 5^2\times {\mathrm{211}}^1\times {\mathrm{997}}^1$

素因数の和:1222

約数の個数: 36

約数和(自身を含む): 45911992

約数和(自身を除く): 24875292

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 211, 422, 844, 997, 1055, 1994, 2110, 3988, 4220, 4985, 5275, 9970, 10550, 19940, 21100, 24925, 49850, 99700, 210367, 420734, 841468, 1051835, 2103670, 4207340, 5259175, 10518350, 21036700]

約数ペア:

[(1, 21036700), (2, 10518350), (4, 5259175), (5, 4207340), (10, 2103670), (20, 1051835), (25, 841468), (50, 420734), (100, 210367), (211, 99700), (422, 49850), (844, 24925), (997, 21100), (1055, 19940), (1994, 10550), (2110, 9970), (3988, 5275), (4220, 4985)]