20217897

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{4651}}^1$

素因数の和:4690

約数の個数: 32

約数和(自身を含む): 35727360

約数和(自身を除く): 15509463

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 161, 189, 207, 483, 621, 1449, 4347, 4651, 13953, 32557, 41859, 97671, 106973, 125577, 293013, 320919, 748811, 879039, 962757, 2246433, 2888271, 6739299, 20217897]

約数ペア:

[(1, 20217897), (3, 6739299), (7, 2888271), (9, 2246433), (21, 962757), (23, 879039), (27, 748811), (63, 320919), (69, 293013), (161, 125577), (189, 106973), (207, 97671), (483, 41859), (621, 32557), (1449, 13953), (4347, 4651)]