15213880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{487}}^1$

素因数の和:580

約数の個数: 64

約数和(自身を含む): 37946880

約数和(自身を除く): 22733000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 440, 487, 568, 710, 781, 974, 1420, 1562, 1948, 2435, 2840, 3124, 3896, 3905, 4870, 5357, 6248, 7810, 9740, 10714, 15620, 19480, 21428, 26785, 31240, 34577, 42856, 53570, 69154, 107140, 138308, 172885, 214280, 276616, 345770, 380347, 691540, 760694, 1383080, 1521388, 1901735, 3042776, 3803470, 7606940, 15213880]

約数ペア:

[(1, 15213880), (2, 7606940), (4, 3803470), (5, 3042776), (8, 1901735), (10, 1521388), (11, 1383080), (20, 760694), (22, 691540), (40, 380347), (44, 345770), (55, 276616), (71, 214280), (88, 172885), (110, 138308), (142, 107140), (220, 69154), (284, 53570), (355, 42856), (440, 34577), (487, 31240), (568, 26785), (710, 21428), (781, 19480), (974, 15620), (1420, 10714), (1562, 9740), (1948, 7810), (2435, 6248), (2840, 5357), (3124, 4870), (3896, 3905)]