15515720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{197}}^1$

素因数の和:398

約数の個数: 64

約数和(自身を含む): 38491200

約数和(自身を除く): 22975480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 179, 197, 220, 358, 394, 440, 716, 788, 895, 985, 1432, 1576, 1790, 1969, 1970, 2167, 3580, 3938, 3940, 4334, 7160, 7876, 7880, 8668, 9845, 10835, 15752, 17336, 19690, 21670, 35263, 39380, 43340, 70526, 78760, 86680, 141052, 176315, 282104, 352630, 387893, 705260, 775786, 1410520, 1551572, 1939465, 3103144, 3878930, 7757860, 15515720]

約数ペア:

[(1, 15515720), (2, 7757860), (4, 3878930), (5, 3103144), (8, 1939465), (10, 1551572), (11, 1410520), (20, 775786), (22, 705260), (40, 387893), (44, 352630), (55, 282104), (88, 176315), (110, 141052), (179, 86680), (197, 78760), (220, 70526), (358, 43340), (394, 39380), (440, 35263), (716, 21670), (788, 19690), (895, 17336), (985, 15752), (1432, 10835), (1576, 9845), (1790, 8668), (1969, 7880), (1970, 7876), (2167, 7160), (3580, 4334), (3938, 3940)]