78980440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{25643}}^1$

素因数の和:25672

約数の個数: 64

約数和(自身を含む): 221564160

約数和(自身を除く): 142583720

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 25643, 51286, 102572, 128215, 179501, 205144, 256430, 282073, 359002, 512860, 564146, 718004, 897505, 1025720, 1128292, 1410365, 1436008, 1795010, 1974511, 2256584, 2820730, 3590020, 3949022, 5641460, 7180040, 7898044, 9872555, 11282920, 15796088, 19745110, 39490220, 78980440]

約数ペア:

[(1, 78980440), (2, 39490220), (4, 19745110), (5, 15796088), (7, 11282920), (8, 9872555), (10, 7898044), (11, 7180040), (14, 5641460), (20, 3949022), (22, 3590020), (28, 2820730), (35, 2256584), (40, 1974511), (44, 1795010), (55, 1436008), (56, 1410365), (70, 1128292), (77, 1025720), (88, 897505), (110, 718004), (140, 564146), (154, 512860), (220, 359002), (280, 282073), (308, 256430), (385, 205144), (440, 179501), (616, 128215), (770, 102572), (1540, 51286), (3080, 25643)]