20697400

素因数分解:

$2^3\times 5^2\times {\mathrm{239}}^1\times {\mathrm{433}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 48434400

約数和(自身を除く): 27737000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 239, 433, 478, 866, 956, 1195, 1732, 1912, 2165, 2390, 3464, 4330, 4780, 5975, 8660, 9560, 10825, 11950, 17320, 21650, 23900, 43300, 47800, 86600, 103487, 206974, 413948, 517435, 827896, 1034870, 2069740, 2587175, 4139480, 5174350, 10348700, 20697400]

約数ペア:

[(1, 20697400), (2, 10348700), (4, 5174350), (5, 4139480), (8, 2587175), (10, 2069740), (20, 1034870), (25, 827896), (40, 517435), (50, 413948), (100, 206974), (200, 103487), (239, 86600), (433, 47800), (478, 43300), (866, 23900), (956, 21650), (1195, 17320), (1732, 11950), (1912, 10825), (2165, 9560), (2390, 8660), (3464, 5975), (4330, 4780)]