21643928

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{51047}}^1$

素因数の和:51106

約数の個数: 16

約数和(自身を含む): 41348880

約数和(自身を除く): 19704952

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 51047, 102094, 204188, 408376, 2705491, 5410982, 10821964, 21643928]

約数ペア:

[(1, 21643928), (2, 10821964), (4, 5410982), (8, 2705491), (53, 408376), (106, 204188), (212, 102094), (424, 51047)]