20198815

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{431}}^1$

素因数の和:559

約数の個数: 32

約数和(自身を含む): 30191616

約数和(自身を除く): 9992801

約数列:

[1, 5, 7, 13, 35, 65, 91, 103, 431, 455, 515, 721, 1339, 2155, 3017, 3605, 5603, 6695, 9373, 15085, 28015, 39221, 44393, 46865, 196105, 221965, 310751, 577109, 1553755, 2885545, 4039763, 20198815]

約数ペア:

[(1, 20198815), (5, 4039763), (7, 2885545), (13, 1553755), (35, 577109), (65, 310751), (91, 221965), (103, 196105), (431, 46865), (455, 44393), (515, 39221), (721, 28015), (1339, 15085), (2155, 9373), (3017, 6695), (3605, 5603)]