21404565

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5227}}^1$

素因数の和:5258

約数の個数: 48

約数和(自身を含む): 45671808

約数和(自身を除く): 24267243

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 195, 273, 315, 455, 585, 819, 1365, 4095, 5227, 15681, 26135, 36589, 47043, 67951, 78405, 109767, 182945, 203853, 235215, 329301, 339755, 475657, 548835, 611559, 1019265, 1426971, 1646505, 2378285, 3057795, 4280913, 7134855, 21404565]

約数ペア:

[(1, 21404565), (3, 7134855), (5, 4280913), (7, 3057795), (9, 2378285), (13, 1646505), (15, 1426971), (21, 1019265), (35, 611559), (39, 548835), (45, 475657), (63, 339755), (65, 329301), (91, 235215), (105, 203853), (117, 182945), (195, 109767), (273, 78405), (315, 67951), (455, 47043), (585, 36589), (819, 26135), (1365, 15681), (4095, 5227)]