20942462080

素因数分解:

$2^7\times 5^1\times {\mathrm{821}}^1\times {\mathrm{39857}}^1$

素因数の和:40697

約数の個数: 64

約数和(自身を含む): 50127812280

約数和(自身を除く): 29185350200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 821, 1642, 3284, 4105, 6568, 8210, 13136, 16420, 26272, 32840, 39857, 52544, 65680, 79714, 105088, 131360, 159428, 199285, 262720, 318856, 398570, 525440, 637712, 797140, 1275424, 1594280, 2550848, 3188560, 5101696, 6377120, 12754240, 25508480, 32722597, 65445194, 130890388, 163612985, 261780776, 327225970, 523561552, 654451940, 1047123104, 1308903880, 2094246208, 2617807760, 4188492416, 5235615520, 10471231040, 20942462080]

約数ペア:

[(1, 20942462080), (2, 10471231040), (4, 5235615520), (5, 4188492416), (8, 2617807760), (10, 2094246208), (16, 1308903880), (20, 1047123104), (32, 654451940), (40, 523561552), (64, 327225970), (80, 261780776), (128, 163612985), (160, 130890388), (320, 65445194), (640, 32722597), (821, 25508480), (1642, 12754240), (3284, 6377120), (4105, 5101696), (6568, 3188560), (8210, 2550848), (13136, 1594280), (16420, 1275424), (26272, 797140), (32840, 637712), (39857, 525440), (52544, 398570), (65680, 318856), (79714, 262720), (105088, 199285), (131360, 159428)]