20921312

素因数分解:

$2^5\times {\mathrm{83}}^1\times {\mathrm{7877}}^1$

素因数の和:7970

約数の個数: 24

約数和(自身を含む): 41690376

約数和(自身を除く): 20769064

約数列:

[1, 2, 4, 8, 16, 32, 83, 166, 332, 664, 1328, 2656, 7877, 15754, 31508, 63016, 126032, 252064, 653791, 1307582, 2615164, 5230328, 10460656, 20921312]

約数ペア:

[(1, 20921312), (2, 10460656), (4, 5230328), (8, 2615164), (16, 1307582), (32, 653791), (83, 252064), (166, 126032), (332, 63016), (664, 31508), (1328, 15754), (2656, 7877)]