21534525

素因数分解:

$3^3\times 5^2\times {\mathrm{61}}^1\times {\mathrm{523}}^1$

素因数の和:603

約数の個数: 48

約数和(自身を含む): 40285120

約数和(自身を除く): 18750595

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 61, 75, 135, 183, 225, 305, 523, 549, 675, 915, 1525, 1569, 1647, 2615, 2745, 4575, 4707, 7845, 8235, 13075, 13725, 14121, 23535, 31903, 39225, 41175, 70605, 95709, 117675, 159515, 287127, 353025, 478545, 797575, 861381, 1435635, 2392725, 4306905, 7178175, 21534525]

約数ペア:

[(1, 21534525), (3, 7178175), (5, 4306905), (9, 2392725), (15, 1435635), (25, 861381), (27, 797575), (45, 478545), (61, 353025), (75, 287127), (135, 159515), (183, 117675), (225, 95709), (305, 70605), (523, 41175), (549, 39225), (675, 31903), (915, 23535), (1525, 14121), (1569, 13725), (1647, 13075), (2615, 8235), (2745, 7845), (4575, 4707)]