21517947

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1367}}^1$

素因数の和:1440

約数の個数: 32

約数和(自身を含む): 35458560

約数和(自身を除く): 13940613

約数列:

[1, 3, 9, 11, 27, 33, 53, 99, 159, 297, 477, 583, 1367, 1431, 1749, 4101, 5247, 12303, 15037, 15741, 36909, 45111, 72451, 135333, 217353, 405999, 652059, 796961, 1956177, 2390883, 7172649, 21517947]

約数ペア:

[(1, 21517947), (3, 7172649), (9, 2390883), (11, 1956177), (27, 796961), (33, 652059), (53, 405999), (99, 217353), (159, 135333), (297, 72451), (477, 45111), (583, 36909), (1367, 15741), (1431, 15037), (1749, 12303), (4101, 5247)]