18876825

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{263}}^1$

素因数の和:319

約数の個数: 72

約数和(自身を含む): 38301120

約数和(自身を除く): 19424295

約数列:

[1, 3, 5, 9, 11, 15, 25, 29, 33, 45, 55, 75, 87, 99, 145, 165, 225, 261, 263, 275, 319, 435, 495, 725, 789, 825, 957, 1305, 1315, 1595, 2175, 2367, 2475, 2871, 2893, 3945, 4785, 6525, 6575, 7627, 7975, 8679, 11835, 14355, 14465, 19725, 22881, 23925, 26037, 38135, 43395, 59175, 68643, 71775, 72325, 83897, 114405, 130185, 190675, 216975, 251691, 343215, 419485, 572025, 650925, 755073, 1258455, 1716075, 2097425, 3775365, 6292275, 18876825]

約数ペア:

[(1, 18876825), (3, 6292275), (5, 3775365), (9, 2097425), (11, 1716075), (15, 1258455), (25, 755073), (29, 650925), (33, 572025), (45, 419485), (55, 343215), (75, 251691), (87, 216975), (99, 190675), (145, 130185), (165, 114405), (225, 83897), (261, 72325), (263, 71775), (275, 68643), (319, 59175), (435, 43395), (495, 38135), (725, 26037), (789, 23925), (825, 22881), (957, 19725), (1305, 14465), (1315, 14355), (1595, 11835), (2175, 8679), (2367, 7975), (2475, 7627), (2871, 6575), (2893, 6525), (3945, 4785)]