20523680

素因数分解:

$2^5\times 5^1\times {\mathrm{128273}}^1$

素因数の和:128288

約数の個数: 24

約数和(自身を含む): 48487572

約数和(自身を除く): 27963892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 128273, 256546, 513092, 641365, 1026184, 1282730, 2052368, 2565460, 4104736, 5130920, 10261840, 20523680]

約数ペア:

[(1, 20523680), (2, 10261840), (4, 5130920), (5, 4104736), (8, 2565460), (10, 2052368), (16, 1282730), (20, 1026184), (32, 641365), (40, 513092), (80, 256546), (160, 128273)]