21318032

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{32497}}^1$

素因数の和:32546

約数の個数: 20

約数和(自身を含む): 42312396

約数和(自身を除く): 20994364

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 32497, 64994, 129988, 259976, 519952, 1332377, 2664754, 5329508, 10659016, 21318032]

約数ペア:

[(1, 21318032), (2, 10659016), (4, 5329508), (8, 2664754), (16, 1332377), (41, 519952), (82, 259976), (164, 129988), (328, 64994), (656, 32497)]