20788299

素因数分解:

$3^3\times 7^2\times {\mathrm{19}}^1\times {\mathrm{827}}^1$

素因数の和:869

約数の個数: 48

約数和(自身を含む): 37756800

約数和(自身を除く): 16968501

約数列:

[1, 3, 7, 9, 19, 21, 27, 49, 57, 63, 133, 147, 171, 189, 399, 441, 513, 827, 931, 1197, 1323, 2481, 2793, 3591, 5789, 7443, 8379, 15713, 17367, 22329, 25137, 40523, 47139, 52101, 109991, 121569, 141417, 156303, 329973, 364707, 424251, 769937, 989919, 1094121, 2309811, 2969757, 6929433, 20788299]

約数ペア:

[(1, 20788299), (3, 6929433), (7, 2969757), (9, 2309811), (19, 1094121), (21, 989919), (27, 769937), (49, 424251), (57, 364707), (63, 329973), (133, 156303), (147, 141417), (171, 121569), (189, 109991), (399, 52101), (441, 47139), (513, 40523), (827, 25137), (931, 22329), (1197, 17367), (1323, 15713), (2481, 8379), (2793, 7443), (3591, 5789)]