18201816

素因数分解:

$2^3\times 3^2\times {\mathrm{101}}^1\times {\mathrm{2503}}^1$

素因数の和:2616

約数の個数: 48

約数和(自身を含む): 49804560

約数和(自身を除く): 31602744

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 101, 202, 303, 404, 606, 808, 909, 1212, 1818, 2424, 2503, 3636, 5006, 7272, 7509, 10012, 15018, 20024, 22527, 30036, 45054, 60072, 90108, 180216, 252803, 505606, 758409, 1011212, 1516818, 2022424, 2275227, 3033636, 4550454, 6067272, 9100908, 18201816]

約数ペア:

[(1, 18201816), (2, 9100908), (3, 6067272), (4, 4550454), (6, 3033636), (8, 2275227), (9, 2022424), (12, 1516818), (18, 1011212), (24, 758409), (36, 505606), (72, 252803), (101, 180216), (202, 90108), (303, 60072), (404, 45054), (606, 30036), (808, 22527), (909, 20024), (1212, 15018), (1818, 10012), (2424, 7509), (2503, 7272), (3636, 5006)]