20969697

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{4919}}^1$

素因数の和:4965

約数の個数: 24

約数和(自身を含む): 33652800

約数和(自身を除く): 12683103

約数列:

[1, 3, 7, 21, 29, 49, 87, 147, 203, 609, 1421, 4263, 4919, 14757, 34433, 103299, 142651, 241031, 427953, 723093, 998557, 2995671, 6989899, 20969697]

約数ペア:

[(1, 20969697), (3, 6989899), (7, 2995671), (21, 998557), (29, 723093), (49, 427953), (87, 241031), (147, 142651), (203, 103299), (609, 34433), (1421, 14757), (4263, 4919)]