20471520

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{42649}}^1$

素因数の和:42667

約数の個数: 48

約数和(自身を含む): 64486800

約数和(自身を除く): 44015280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 480, 42649, 85298, 127947, 170596, 213245, 255894, 341192, 426490, 511788, 639735, 682384, 852980, 1023576, 1279470, 1364768, 1705960, 2047152, 2558940, 3411920, 4094304, 5117880, 6823840, 10235760, 20471520]

約数ペア:

[(1, 20471520), (2, 10235760), (3, 6823840), (4, 5117880), (5, 4094304), (6, 3411920), (8, 2558940), (10, 2047152), (12, 1705960), (15, 1364768), (16, 1279470), (20, 1023576), (24, 852980), (30, 682384), (32, 639735), (40, 511788), (48, 426490), (60, 341192), (80, 255894), (96, 213245), (120, 170596), (160, 127947), (240, 85298), (480, 42649)]