21109850

素因数分解:

$2^1\times 5^2\times {\mathrm{103}}^1\times {\mathrm{4099}}^1$

素因数の和:4214

約数の個数: 24

約数和(自身を含む): 39655200

約数和(自身を除く): 18545350

約数列:

[1, 2, 5, 10, 25, 50, 103, 206, 515, 1030, 2575, 4099, 5150, 8198, 20495, 40990, 102475, 204950, 422197, 844394, 2110985, 4221970, 10554925, 21109850]

約数ペア:

[(1, 21109850), (2, 10554925), (5, 4221970), (10, 2110985), (25, 844394), (50, 422197), (103, 204950), (206, 102475), (515, 40990), (1030, 20495), (2575, 8198), (4099, 5150)]