20123137405

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1780021}}^1$

素因数の和:1780069

約数の個数: 32

約数和(自身を含む): 30758780160

約数和(自身を除く): 10635642755

約数列:

[1, 5, 7, 17, 19, 35, 85, 95, 119, 133, 323, 595, 665, 1615, 2261, 11305, 1780021, 8900105, 12460147, 30260357, 33820399, 62300735, 151301785, 169101995, 211822499, 236742793, 574946783, 1059112495, 1183713965, 2874733915, 4024627481, 20123137405]

約数ペア:

[(1, 20123137405), (5, 4024627481), (7, 2874733915), (17, 1183713965), (19, 1059112495), (35, 574946783), (85, 236742793), (95, 211822499), (119, 169101995), (133, 151301785), (323, 62300735), (595, 33820399), (665, 30260357), (1615, 12460147), (2261, 8900105), (11305, 1780021)]