20446450

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{239}}^1$

素因数の和:339

約数の個数: 48

約数和(自身を含む): 40176000

約数和(自身を除く): 19729550

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 59, 118, 145, 239, 290, 295, 478, 590, 725, 1195, 1450, 1475, 1711, 2390, 2950, 3422, 5975, 6931, 8555, 11950, 13862, 14101, 17110, 28202, 34655, 42775, 69310, 70505, 85550, 141010, 173275, 346550, 352525, 408929, 705050, 817858, 2044645, 4089290, 10223225, 20446450]

約数ペア:

[(1, 20446450), (2, 10223225), (5, 4089290), (10, 2044645), (25, 817858), (29, 705050), (50, 408929), (58, 352525), (59, 346550), (118, 173275), (145, 141010), (239, 85550), (290, 70505), (295, 69310), (478, 42775), (590, 34655), (725, 28202), (1195, 17110), (1450, 14101), (1475, 13862), (1711, 11950), (2390, 8555), (2950, 6931), (3422, 5975)]