21352520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76259}}^1$

素因数の和:76277

約数の個数: 32

約数和(自身を含む): 54907200

約数和(自身を除く): 33554680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76259, 152518, 305036, 381295, 533813, 610072, 762590, 1067626, 1525180, 2135252, 2669065, 3050360, 4270504, 5338130, 10676260, 21352520]

約数ペア:

[(1, 21352520), (2, 10676260), (4, 5338130), (5, 4270504), (7, 3050360), (8, 2669065), (10, 2135252), (14, 1525180), (20, 1067626), (28, 762590), (35, 610072), (40, 533813), (56, 381295), (70, 305036), (140, 152518), (280, 76259)]