20654425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:166

約数の個数: 48

約数和(自身を含む): 30355200

約数和(自身を除く): 9700775

約数列:

[1, 5, 11, 19, 25, 55, 59, 67, 95, 209, 275, 295, 335, 475, 649, 737, 1045, 1121, 1273, 1475, 1675, 3245, 3685, 3953, 5225, 5605, 6365, 12331, 14003, 16225, 18425, 19765, 28025, 31825, 43483, 61655, 70015, 75107, 98825, 217415, 308275, 350075, 375535, 826177, 1087075, 1877675, 4130885, 20654425]

約数ペア:

[(1, 20654425), (5, 4130885), (11, 1877675), (19, 1087075), (25, 826177), (55, 375535), (59, 350075), (67, 308275), (95, 217415), (209, 98825), (275, 75107), (295, 70015), (335, 61655), (475, 43483), (649, 31825), (737, 28025), (1045, 19765), (1121, 18425), (1273, 16225), (1475, 14003), (1675, 12331), (3245, 6365), (3685, 5605), (3953, 5225)]