20911630

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{29453}}^1$

素因数の和:29531

約数の個数: 16

約数和(自身を含む): 38172384

約数和(自身を除く): 17260754

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 29453, 58906, 147265, 294530, 2091163, 4182326, 10455815, 20911630]

約数ペア:

[(1, 20911630), (2, 10455815), (5, 4182326), (10, 2091163), (71, 294530), (142, 147265), (355, 58906), (710, 29453)]