20747475

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{4391}}^1$

素因数の和:4417

約数の個数: 48

約数和(自身を含む): 43568640

約数和(自身を除く): 22821165

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 105, 135, 175, 189, 225, 315, 525, 675, 945, 1575, 4391, 4725, 13173, 21955, 30737, 39519, 65865, 92211, 109775, 118557, 153685, 197595, 276633, 329325, 461055, 592785, 768425, 829899, 987975, 1383165, 2305275, 2963925, 4149495, 6915825, 20747475]

約数ペア:

[(1, 20747475), (3, 6915825), (5, 4149495), (7, 2963925), (9, 2305275), (15, 1383165), (21, 987975), (25, 829899), (27, 768425), (35, 592785), (45, 461055), (63, 329325), (75, 276633), (105, 197595), (135, 153685), (175, 118557), (189, 109775), (225, 92211), (315, 65865), (525, 39519), (675, 30737), (945, 21955), (1575, 13173), (4391, 4725)]