20798655

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{349}}^1$

素因数の和:523

約数の個数: 32

約数和(自身を含む): 34776000

約数和(自身を除く): 13977345

約数列:

[1, 3, 5, 15, 29, 87, 137, 145, 349, 411, 435, 685, 1047, 1745, 2055, 3973, 5235, 10121, 11919, 19865, 30363, 47813, 50605, 59595, 143439, 151815, 239065, 717195, 1386577, 4159731, 6932885, 20798655]

約数ペア:

[(1, 20798655), (3, 6932885), (5, 4159731), (15, 1386577), (29, 717195), (87, 239065), (137, 151815), (145, 143439), (349, 59595), (411, 50605), (435, 47813), (685, 30363), (1047, 19865), (1745, 11919), (2055, 10121), (3973, 5235)]