21563025

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{443}}^1$

素因数の和:526

約数の個数: 48

約数和(自身を含む): 39640320

約数和(自身を除く): 18077295

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 59, 75, 165, 177, 275, 295, 443, 649, 825, 885, 1329, 1475, 1947, 2215, 3245, 4425, 4873, 6645, 9735, 11075, 14619, 16225, 24365, 26137, 33225, 48675, 73095, 78411, 121825, 130685, 287507, 365475, 392055, 653425, 862521, 1437535, 1960275, 4312605, 7187675, 21563025]

約数ペア:

[(1, 21563025), (3, 7187675), (5, 4312605), (11, 1960275), (15, 1437535), (25, 862521), (33, 653425), (55, 392055), (59, 365475), (75, 287507), (165, 130685), (177, 121825), (275, 78411), (295, 73095), (443, 48675), (649, 33225), (825, 26137), (885, 24365), (1329, 16225), (1475, 14619), (1947, 11075), (2215, 9735), (3245, 6645), (4425, 4873)]