19968597

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{401}}^1\times {\mathrm{503}}^1$

素因数の和:921

約数の個数: 24

約数和(自身を含む): 31606848

約数和(自身を除く): 11638251

約数列:

[1, 3, 9, 11, 33, 99, 401, 503, 1203, 1509, 3609, 4411, 4527, 5533, 13233, 16599, 39699, 49797, 201703, 605109, 1815327, 2218733, 6656199, 19968597]

約数ペア:

[(1, 19968597), (3, 6656199), (9, 2218733), (11, 1815327), (33, 605109), (99, 201703), (401, 49797), (503, 39699), (1203, 16599), (1509, 13233), (3609, 5533), (4411, 4527)]