21457850

素因数分解:

$2^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{397}}^1$

素因数の和:479

約数の個数: 48

約数和(自身を含む): 42640128

約数和(自身を除く): 21182278

約数列:

[1, 2, 5, 10, 23, 25, 46, 47, 50, 94, 115, 230, 235, 397, 470, 575, 794, 1081, 1150, 1175, 1985, 2162, 2350, 3970, 5405, 9131, 9925, 10810, 18262, 18659, 19850, 27025, 37318, 45655, 54050, 91310, 93295, 186590, 228275, 429157, 456550, 466475, 858314, 932950, 2145785, 4291570, 10728925, 21457850]

約数ペア:

[(1, 21457850), (2, 10728925), (5, 4291570), (10, 2145785), (23, 932950), (25, 858314), (46, 466475), (47, 456550), (50, 429157), (94, 228275), (115, 186590), (230, 93295), (235, 91310), (397, 54050), (470, 45655), (575, 37318), (794, 27025), (1081, 19850), (1150, 18659), (1175, 18262), (1985, 10810), (2162, 9925), (2350, 9131), (3970, 5405)]