90311980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{557}}^1$

素因数の和:655

約数の個数: 72

約数和(自身を含む): 211955184

約数和(自身を除く): 121643204

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 67, 110, 121, 134, 220, 242, 268, 335, 484, 557, 605, 670, 737, 1114, 1210, 1340, 1474, 2228, 2420, 2785, 2948, 3685, 5570, 6127, 7370, 8107, 11140, 12254, 14740, 16214, 24508, 30635, 32428, 37319, 40535, 61270, 67397, 74638, 81070, 122540, 134794, 149276, 162140, 186595, 269588, 336985, 373190, 410509, 673970, 746380, 821018, 1347940, 1642036, 2052545, 4105090, 4515599, 8210180, 9031198, 18062396, 22577995, 45155990, 90311980]

約数ペア:

[(1, 90311980), (2, 45155990), (4, 22577995), (5, 18062396), (10, 9031198), (11, 8210180), (20, 4515599), (22, 4105090), (44, 2052545), (55, 1642036), (67, 1347940), (110, 821018), (121, 746380), (134, 673970), (220, 410509), (242, 373190), (268, 336985), (335, 269588), (484, 186595), (557, 162140), (605, 149276), (670, 134794), (737, 122540), (1114, 81070), (1210, 74638), (1340, 67397), (1474, 61270), (2228, 40535), (2420, 37319), (2785, 32428), (2948, 30635), (3685, 24508), (5570, 16214), (6127, 14740), (7370, 12254), (8107, 11140)]