20802512

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{419}}^1$

素因数の和:563

約数の個数: 40

約数和(自身を含む): 42184800

約数和(自身を除く): 21382288

約数列:

[1, 2, 4, 8, 16, 29, 58, 107, 116, 214, 232, 419, 428, 464, 838, 856, 1676, 1712, 3103, 3352, 6206, 6704, 12151, 12412, 24302, 24824, 44833, 48604, 49648, 89666, 97208, 179332, 194416, 358664, 717328, 1300157, 2600314, 5200628, 10401256, 20802512]

約数ペア:

[(1, 20802512), (2, 10401256), (4, 5200628), (8, 2600314), (16, 1300157), (29, 717328), (58, 358664), (107, 194416), (116, 179332), (214, 97208), (232, 89666), (419, 49648), (428, 48604), (464, 44833), (838, 24824), (856, 24302), (1676, 12412), (1712, 12151), (3103, 6704), (3352, 6206)]