20983815

素因数分解:

$3^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1471}}^1$

素因数の和:1799

約数の個数: 24

約数和(自身を含む): 36511488

約数和(自身を除く): 15527673

約数列:

[1, 3, 5, 9, 15, 45, 317, 951, 1471, 1585, 2853, 4413, 4755, 7355, 13239, 14265, 22065, 66195, 466307, 1398921, 2331535, 4196763, 6994605, 20983815]

約数ペア:

[(1, 20983815), (3, 6994605), (5, 4196763), (9, 2331535), (15, 1398921), (45, 466307), (317, 66195), (951, 22065), (1471, 14265), (1585, 13239), (2853, 7355), (4413, 4755)]