21880453040

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{647}}^1\times {\mathrm{5351}}^1$

素因数の和:6090

約数の個数: 80

約数和(自身を含む): 51605268480

約数和(自身を除く): 29724815440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 647, 790, 1264, 1294, 1580, 2588, 3160, 3235, 5176, 5351, 6320, 6470, 10352, 10702, 12940, 21404, 25880, 26755, 42808, 51113, 51760, 53510, 85616, 102226, 107020, 204452, 214040, 255565, 408904, 422729, 428080, 511130, 817808, 845458, 1022260, 1690916, 2044520, 2113645, 3381832, 3462097, 4089040, 4227290, 6763664, 6924194, 8454580, 13848388, 16909160, 17310485, 27696776, 33818320, 34620970, 55393552, 69241940, 138483880, 273505663, 276967760, 547011326, 1094022652, 1367528315, 2188045304, 2735056630, 4376090608, 5470113260, 10940226520, 21880453040]

約数ペア:

[(1, 21880453040), (2, 10940226520), (4, 5470113260), (5, 4376090608), (8, 2735056630), (10, 2188045304), (16, 1367528315), (20, 1094022652), (40, 547011326), (79, 276967760), (80, 273505663), (158, 138483880), (316, 69241940), (395, 55393552), (632, 34620970), (647, 33818320), (790, 27696776), (1264, 17310485), (1294, 16909160), (1580, 13848388), (2588, 8454580), (3160, 6924194), (3235, 6763664), (5176, 4227290), (5351, 4089040), (6320, 3462097), (6470, 3381832), (10352, 2113645), (10702, 2044520), (12940, 1690916), (21404, 1022260), (25880, 845458), (26755, 817808), (42808, 511130), (51113, 428080), (51760, 422729), (53510, 408904), (85616, 255565), (102226, 214040), (107020, 204452)]