21980595

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{16103}}^1$

素因数の和:16131

約数の個数: 32

約数和(自身を含む): 43287552

約数和(自身を除く): 21306957

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 16103, 48309, 80515, 112721, 209339, 241545, 338163, 563605, 628017, 1046695, 1465373, 1690815, 3140085, 4396119, 7326865, 21980595]

約数ペア:

[(1, 21980595), (3, 7326865), (5, 4396119), (7, 3140085), (13, 1690815), (15, 1465373), (21, 1046695), (35, 628017), (39, 563605), (65, 338163), (91, 241545), (105, 209339), (195, 112721), (273, 80515), (455, 48309), (1365, 16103)]