20180504561

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{20897}}^1$

素因数の和:21113

約数の個数: 32

約数和(自身を含む): 24917103360

約数和(自身を除く): 4736598799

約数列:

[1, 7, 19, 53, 133, 137, 371, 959, 1007, 2603, 7049, 7261, 18221, 20897, 50827, 137959, 146279, 397043, 965713, 1107541, 2779301, 2862889, 7752787, 20040223, 21043279, 54394891, 147302953, 151733117, 380764237, 1062131819, 2882929223, 20180504561]

約数ペア:

[(1, 20180504561), (7, 2882929223), (19, 1062131819), (53, 380764237), (133, 151733117), (137, 147302953), (371, 54394891), (959, 21043279), (1007, 20040223), (2603, 7752787), (7049, 2862889), (7261, 2779301), (18221, 1107541), (20897, 965713), (50827, 397043), (137959, 146279)]