1640723280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{976621}}^1$

素因数の和:976644

約数の個数: 80

約数和(自身を含む): 5812854144

約数和(自身を除く): 4172130864

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 976621, 1953242, 2929863, 3906484, 4883105, 5859726, 6836347, 7812968, 9766210, 11719452, 13672694, 14649315, 15625936, 19532420, 20509041, 23438904, 27345388, 29298630, 34181735, 39064840, 41018082, 46877808, 54690776, 58597260, 68363470, 78129680, 82036164, 102545205, 109381552, 117194520, 136726940, 164072328, 205090410, 234389040, 273453880, 328144656, 410180820, 546907760, 820361640, 1640723280]

約数ペア:

[(1, 1640723280), (2, 820361640), (3, 546907760), (4, 410180820), (5, 328144656), (6, 273453880), (7, 234389040), (8, 205090410), (10, 164072328), (12, 136726940), (14, 117194520), (15, 109381552), (16, 102545205), (20, 82036164), (21, 78129680), (24, 68363470), (28, 58597260), (30, 54690776), (35, 46877808), (40, 41018082), (42, 39064840), (48, 34181735), (56, 29298630), (60, 27345388), (70, 23438904), (80, 20509041), (84, 19532420), (105, 15625936), (112, 14649315), (120, 13672694), (140, 11719452), (168, 9766210), (210, 7812968), (240, 6836347), (280, 5859726), (336, 4883105), (420, 3906484), (560, 2929863), (840, 1953242), (1680, 976621)]