20692791

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{139}}^2$

素因数の和:308

約数の個数: 36

約数和(自身を含む): 36430992

約数和(自身を除く): 15738201

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 139, 153, 357, 417, 973, 1071, 1251, 2363, 2919, 7089, 8757, 16541, 19321, 21267, 49623, 57963, 135247, 148869, 173889, 328457, 405741, 985371, 1217223, 2299199, 2956113, 6897597, 20692791]

約数ペア:

[(1, 20692791), (3, 6897597), (7, 2956113), (9, 2299199), (17, 1217223), (21, 985371), (51, 405741), (63, 328457), (119, 173889), (139, 148869), (153, 135247), (357, 57963), (417, 49623), (973, 21267), (1071, 19321), (1251, 16541), (2363, 8757), (2919, 7089)]