21405108

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{331}}^1$

素因数の和:672

約数の個数: 48

約数和(自身を含む): 53210304

約数和(自身を除く): 31805196

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204, 317, 331, 634, 662, 951, 993, 1268, 1324, 1902, 1986, 3804, 3972, 5389, 5627, 10778, 11254, 16167, 16881, 21556, 22508, 32334, 33762, 64668, 67524, 104927, 209854, 314781, 419708, 629562, 1259124, 1783759, 3567518, 5351277, 7135036, 10702554, 21405108]

約数ペア:

[(1, 21405108), (2, 10702554), (3, 7135036), (4, 5351277), (6, 3567518), (12, 1783759), (17, 1259124), (34, 629562), (51, 419708), (68, 314781), (102, 209854), (204, 104927), (317, 67524), (331, 64668), (634, 33762), (662, 32334), (951, 22508), (993, 21556), (1268, 16881), (1324, 16167), (1902, 11254), (1986, 10778), (3804, 5627), (3972, 5389)]