21175090

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{39953}}^1$

素因数の和:40013

約数の個数: 16

約数和(自身を含む): 38835288

約数和(自身を除く): 17660198

約数列:

[1, 2, 5, 10, 53, 106, 265, 530, 39953, 79906, 199765, 399530, 2117509, 4235018, 10587545, 21175090]

約数ペア:

[(1, 21175090), (2, 10587545), (5, 4235018), (10, 2117509), (53, 399530), (106, 199765), (265, 79906), (530, 39953)]