21082288

素因数分解:

$2^4\times {\mathrm{397}}^1\times {\mathrm{3319}}^1$

素因数の和:3724

約数の個数: 20

約数和(自身を含む): 40962160

約数和(自身を除く): 19879872

約数列:

[1, 2, 4, 8, 16, 397, 794, 1588, 3176, 3319, 6352, 6638, 13276, 26552, 53104, 1317643, 2635286, 5270572, 10541144, 21082288]

約数ペア:

[(1, 21082288), (2, 10541144), (4, 5270572), (8, 2635286), (16, 1317643), (397, 53104), (794, 26552), (1588, 13276), (3176, 6638), (3319, 6352)]