21397552

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{121577}}^1$

素因数の和:121596

約数の個数: 20

約数和(自身を含む): 45227016

約数和(自身を除く): 23829464

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 121577, 243154, 486308, 972616, 1337347, 1945232, 2674694, 5349388, 10698776, 21397552]

約数ペア:

[(1, 21397552), (2, 10698776), (4, 5349388), (8, 2674694), (11, 1945232), (16, 1337347), (22, 972616), (44, 486308), (88, 243154), (176, 121577)]