21090618

素因数分解:

$2^1\times 3^4\times {\mathrm{101}}^1\times {\mathrm{1289}}^1$

素因数の和:1404

約数の個数: 40

約数和(自身を含む): 47763540

約数和(自身を除く): 26672922

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 101, 162, 202, 303, 606, 909, 1289, 1818, 2578, 2727, 3867, 5454, 7734, 8181, 11601, 16362, 23202, 34803, 69606, 104409, 130189, 208818, 260378, 390567, 781134, 1171701, 2343402, 3515103, 7030206, 10545309, 21090618]

約数ペア:

[(1, 21090618), (2, 10545309), (3, 7030206), (6, 3515103), (9, 2343402), (18, 1171701), (27, 781134), (54, 390567), (81, 260378), (101, 208818), (162, 130189), (202, 104409), (303, 69606), (606, 34803), (909, 23202), (1289, 16362), (1818, 11601), (2578, 8181), (2727, 7734), (3867, 5454)]