21578640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1913}}^1$

素因数の和:1976

約数の個数: 80

約数和(自身を含む): 68352768

約数和(自身を除く): 46774128

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 47, 48, 60, 80, 94, 120, 141, 188, 235, 240, 282, 376, 470, 564, 705, 752, 940, 1128, 1410, 1880, 1913, 2256, 2820, 3760, 3826, 5640, 5739, 7652, 9565, 11280, 11478, 15304, 19130, 22956, 28695, 30608, 38260, 45912, 57390, 76520, 89911, 91824, 114780, 153040, 179822, 229560, 269733, 359644, 449555, 459120, 539466, 719288, 899110, 1078932, 1348665, 1438576, 1798220, 2157864, 2697330, 3596440, 4315728, 5394660, 7192880, 10789320, 21578640]

約数ペア:

[(1, 21578640), (2, 10789320), (3, 7192880), (4, 5394660), (5, 4315728), (6, 3596440), (8, 2697330), (10, 2157864), (12, 1798220), (15, 1438576), (16, 1348665), (20, 1078932), (24, 899110), (30, 719288), (40, 539466), (47, 459120), (48, 449555), (60, 359644), (80, 269733), (94, 229560), (120, 179822), (141, 153040), (188, 114780), (235, 91824), (240, 89911), (282, 76520), (376, 57390), (470, 45912), (564, 38260), (705, 30608), (752, 28695), (940, 22956), (1128, 19130), (1410, 15304), (1880, 11478), (1913, 11280), (2256, 9565), (2820, 7652), (3760, 5739), (3826, 5640)]