18015525

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1$

素因数の和:307

約数の個数: 72

約数和(自身を含む): 36560160

約数和(自身を除く): 18544635

約数列:

[1, 3, 5, 9, 11, 15, 25, 29, 33, 45, 55, 75, 87, 99, 145, 165, 225, 251, 261, 275, 319, 435, 495, 725, 753, 825, 957, 1255, 1305, 1595, 2175, 2259, 2475, 2761, 2871, 3765, 4785, 6275, 6525, 7279, 7975, 8283, 11295, 13805, 14355, 18825, 21837, 23925, 24849, 36395, 41415, 56475, 65511, 69025, 71775, 80069, 109185, 124245, 181975, 207075, 240207, 327555, 400345, 545925, 621225, 720621, 1201035, 1637775, 2001725, 3603105, 6005175, 18015525]

約数ペア:

[(1, 18015525), (3, 6005175), (5, 3603105), (9, 2001725), (11, 1637775), (15, 1201035), (25, 720621), (29, 621225), (33, 545925), (45, 400345), (55, 327555), (75, 240207), (87, 207075), (99, 181975), (145, 124245), (165, 109185), (225, 80069), (251, 71775), (261, 69025), (275, 65511), (319, 56475), (435, 41415), (495, 36395), (725, 24849), (753, 23925), (825, 21837), (957, 18825), (1255, 14355), (1305, 13805), (1595, 11295), (2175, 8283), (2259, 7975), (2475, 7279), (2761, 6525), (2871, 6275), (3765, 4785)]