21389145

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{2267}}^1$

素因数の和:2329

約数の個数: 32

約数和(自身を含む): 37231488

約数和(自身を除く): 15842343

約数列:

[1, 3, 5, 15, 17, 37, 51, 85, 111, 185, 255, 555, 629, 1887, 2267, 3145, 6801, 9435, 11335, 34005, 38539, 83879, 115617, 192695, 251637, 419395, 578085, 1258185, 1425943, 4277829, 7129715, 21389145]

約数ペア:

[(1, 21389145), (3, 7129715), (5, 4277829), (15, 1425943), (17, 1258185), (37, 578085), (51, 419395), (85, 251637), (111, 192695), (185, 115617), (255, 83879), (555, 38539), (629, 34005), (1887, 11335), (2267, 9435), (3145, 6801)]