21000455

素因数分解:

$5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{11321}}^1$

素因数の和:11386

約数の個数: 16

約数和(自身を含む): 29346624

約数和(自身を除く): 8346169

約数列:

[1, 5, 7, 35, 53, 265, 371, 1855, 11321, 56605, 79247, 396235, 600013, 3000065, 4200091, 21000455]

約数ペア:

[(1, 21000455), (5, 4200091), (7, 3000065), (35, 600013), (53, 396235), (265, 79247), (371, 56605), (1855, 11321)]