21438459

素因数分解:

$3^3\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1693}}^1$

素因数の和:1776

約数の個数: 32

約数和(自身を含む): 36861440

約数和(自身を除く): 15422981

約数列:

[1, 3, 7, 9, 21, 27, 63, 67, 189, 201, 469, 603, 1407, 1693, 1809, 4221, 5079, 11851, 12663, 15237, 35553, 45711, 106659, 113431, 319977, 340293, 794017, 1020879, 2382051, 3062637, 7146153, 21438459]

約数ペア:

[(1, 21438459), (3, 7146153), (7, 3062637), (9, 2382051), (21, 1020879), (27, 794017), (63, 340293), (67, 319977), (189, 113431), (201, 106659), (469, 45711), (603, 35553), (1407, 15237), (1693, 12663), (1809, 11851), (4221, 5079)]