28440225

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{11491}}^1$

素因数の和:11518

約数の個数: 36

約数和(自身を含む): 55575312

約数和(自身を除く): 27135087

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 11491, 34473, 57455, 103419, 126401, 172365, 287275, 379203, 517095, 632005, 861825, 1137609, 1896015, 2585475, 3160025, 5688045, 9480075, 28440225]

約数ペア:

[(1, 28440225), (3, 9480075), (5, 5688045), (9, 3160025), (11, 2585475), (15, 1896015), (25, 1137609), (33, 861825), (45, 632005), (55, 517095), (75, 379203), (99, 287275), (165, 172365), (225, 126401), (275, 103419), (495, 57455), (825, 34473), (2475, 11491)]