891520

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{199}}^1$

素因数の和:225

約数の個数: 64

約数和(自身を含む): 2448000

約数和(自身を除く): 1556480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 199, 224, 280, 320, 398, 448, 560, 640, 796, 896, 995, 1120, 1393, 1592, 1990, 2240, 2786, 3184, 3980, 4480, 5572, 6368, 6965, 7960, 11144, 12736, 13930, 15920, 22288, 25472, 27860, 31840, 44576, 55720, 63680, 89152, 111440, 127360, 178304, 222880, 445760, 891520]

約数ペア:

[(1, 891520), (2, 445760), (4, 222880), (5, 178304), (7, 127360), (8, 111440), (10, 89152), (14, 63680), (16, 55720), (20, 44576), (28, 31840), (32, 27860), (35, 25472), (40, 22288), (56, 15920), (64, 13930), (70, 12736), (80, 11144), (112, 7960), (128, 6965), (140, 6368), (160, 5572), (199, 4480), (224, 3980), (280, 3184), (320, 2786), (398, 2240), (448, 1990), (560, 1592), (640, 1393), (796, 1120), (896, 995)]