205520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{367}}^1$

素因数の和:387

約数の個数: 40

約数和(自身を含む): 547584

約数和(自身を除く): 342064

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 367, 560, 734, 1468, 1835, 2569, 2936, 3670, 5138, 5872, 7340, 10276, 12845, 14680, 20552, 25690, 29360, 41104, 51380, 102760, 205520]

約数ペア:

[(1, 205520), (2, 102760), (4, 51380), (5, 41104), (7, 29360), (8, 25690), (10, 20552), (14, 14680), (16, 12845), (20, 10276), (28, 7340), (35, 5872), (40, 5138), (56, 3670), (70, 2936), (80, 2569), (112, 1835), (140, 1468), (280, 734), (367, 560)]