20915650

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{8537}}^1$

素因数の和:8563

約数の個数: 36

約数和(自身を含む): 45259938

約数和(自身を除く): 24344288

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 70, 98, 175, 245, 350, 490, 1225, 2450, 8537, 17074, 42685, 59759, 85370, 119518, 213425, 298795, 418313, 426850, 597590, 836626, 1493975, 2091565, 2987950, 4183130, 10457825, 20915650]

約数ペア:

[(1, 20915650), (2, 10457825), (5, 4183130), (7, 2987950), (10, 2091565), (14, 1493975), (25, 836626), (35, 597590), (49, 426850), (50, 418313), (70, 298795), (98, 213425), (175, 119518), (245, 85370), (350, 59759), (490, 42685), (1225, 17074), (2450, 8537)]