21147060

素因数分解:

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

素因数の和:381

約数の個数: 72

約数和(自身を含む): 64957536

約数和(自身を除く): 43810476

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 179, 220, 330, 358, 537, 660, 716, 895, 1074, 1790, 1969, 2148, 2685, 3580, 3938, 5370, 5907, 7876, 9845, 10740, 11814, 19690, 23628, 29535, 32041, 39380, 59070, 64082, 96123, 118140, 128164, 160205, 192246, 320410, 352451, 384492, 480615, 640820, 704902, 961230, 1057353, 1409804, 1762255, 1922460, 2114706, 3524510, 4229412, 5286765, 7049020, 10573530, 21147060]

約数ペア:

[(1, 21147060), (2, 10573530), (3, 7049020), (4, 5286765), (5, 4229412), (6, 3524510), (10, 2114706), (11, 1922460), (12, 1762255), (15, 1409804), (20, 1057353), (22, 961230), (30, 704902), (33, 640820), (44, 480615), (55, 384492), (60, 352451), (66, 320410), (110, 192246), (132, 160205), (165, 128164), (179, 118140), (220, 96123), (330, 64082), (358, 59070), (537, 39380), (660, 32041), (716, 29535), (895, 23628), (1074, 19690), (1790, 11814), (1969, 10740), (2148, 9845), (2685, 7876), (3580, 5907), (3938, 5370)]