19981216

素因数分解:

$2^5\times {\mathrm{167}}^1\times {\mathrm{3739}}^1$

素因数の和:3916

約数の個数: 24

約数和(自身を含む): 39584160

約数和(自身を除く): 19602944

約数列:

[1, 2, 4, 8, 16, 32, 167, 334, 668, 1336, 2672, 3739, 5344, 7478, 14956, 29912, 59824, 119648, 624413, 1248826, 2497652, 4995304, 9990608, 19981216]

約数ペア:

[(1, 19981216), (2, 9990608), (4, 4995304), (8, 2497652), (16, 1248826), (32, 624413), (167, 119648), (334, 59824), (668, 29912), (1336, 14956), (2672, 7478), (3739, 5344)]