21026577

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2131}}^1$

素因数の和:2181

約数の個数: 32

約数和(自身を含む): 34384896

約数和(自身を除く): 13358319

約数列:

[1, 3, 11, 13, 23, 33, 39, 69, 143, 253, 299, 429, 759, 897, 2131, 3289, 6393, 9867, 23441, 27703, 49013, 70323, 83109, 147039, 304733, 539143, 637169, 914199, 1617429, 1911507, 7008859, 21026577]

約数ペア:

[(1, 21026577), (3, 7008859), (11, 1911507), (13, 1617429), (23, 914199), (33, 637169), (39, 539143), (69, 304733), (143, 147039), (253, 83109), (299, 70323), (429, 49013), (759, 27703), (897, 23441), (2131, 9867), (3289, 6393)]