20836480

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{4651}}^1$

素因数の和:4677

約数の個数: 64

約数和(自身を含む): 56940480

約数和(自身を除く): 36104000

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, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 4651, 9302, 18604, 23255, 32557, 37208, 46510, 65114, 74416, 93020, 130228, 148832, 162785, 186040, 260456, 297664, 325570, 372080, 520912, 595328, 651140, 744160, 1041824, 1302280, 1488320, 2083648, 2604560, 2976640, 4167296, 5209120, 10418240, 20836480]

約数ペア:

[(1, 20836480), (2, 10418240), (4, 5209120), (5, 4167296), (7, 2976640), (8, 2604560), (10, 2083648), (14, 1488320), (16, 1302280), (20, 1041824), (28, 744160), (32, 651140), (35, 595328), (40, 520912), (56, 372080), (64, 325570), (70, 297664), (80, 260456), (112, 186040), (128, 162785), (140, 148832), (160, 130228), (224, 93020), (280, 74416), (320, 65114), (448, 46510), (560, 37208), (640, 32557), (896, 23255), (1120, 18604), (2240, 9302), (4480, 4651)]