21335800

素因数分解:

$2^3\times 5^2\times {\mathrm{107}}^1\times {\mathrm{997}}^1$

素因数の和:1120

約数の個数: 48

約数和(自身を含む): 50119560

約数和(自身を除く): 28783760

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 107, 200, 214, 428, 535, 856, 997, 1070, 1994, 2140, 2675, 3988, 4280, 4985, 5350, 7976, 9970, 10700, 19940, 21400, 24925, 39880, 49850, 99700, 106679, 199400, 213358, 426716, 533395, 853432, 1066790, 2133580, 2666975, 4267160, 5333950, 10667900, 21335800]

約数ペア:

[(1, 21335800), (2, 10667900), (4, 5333950), (5, 4267160), (8, 2666975), (10, 2133580), (20, 1066790), (25, 853432), (40, 533395), (50, 426716), (100, 213358), (107, 199400), (200, 106679), (214, 99700), (428, 49850), (535, 39880), (856, 24925), (997, 21400), (1070, 19940), (1994, 10700), (2140, 9970), (2675, 7976), (3988, 5350), (4280, 4985)]