21090240

素因数分解:

$2^6\times 3^3\times 5^1\times {\mathrm{2441}}^1$

素因数の和:2467

約数の個数: 112

約数和(自身を含む): 74432160

約数和(自身を除く): 53341920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 432, 480, 540, 576, 720, 864, 960, 1080, 1440, 1728, 2160, 2441, 2880, 4320, 4882, 7323, 8640, 9764, 12205, 14646, 19528, 21969, 24410, 29292, 36615, 39056, 43938, 48820, 58584, 65907, 73230, 78112, 87876, 97640, 109845, 117168, 131814, 146460, 156224, 175752, 195280, 219690, 234336, 263628, 292920, 329535, 351504, 390560, 439380, 468672, 527256, 585840, 659070, 703008, 781120, 878760, 1054512, 1171680, 1318140, 1406016, 1757520, 2109024, 2343360, 2636280, 3515040, 4218048, 5272560, 7030080, 10545120, 21090240]

約数ペア:

[(1, 21090240), (2, 10545120), (3, 7030080), (4, 5272560), (5, 4218048), (6, 3515040), (8, 2636280), (9, 2343360), (10, 2109024), (12, 1757520), (15, 1406016), (16, 1318140), (18, 1171680), (20, 1054512), (24, 878760), (27, 781120), (30, 703008), (32, 659070), (36, 585840), (40, 527256), (45, 468672), (48, 439380), (54, 390560), (60, 351504), (64, 329535), (72, 292920), (80, 263628), (90, 234336), (96, 219690), (108, 195280), (120, 175752), (135, 156224), (144, 146460), (160, 131814), (180, 117168), (192, 109845), (216, 97640), (240, 87876), (270, 78112), (288, 73230), (320, 65907), (360, 58584), (432, 48820), (480, 43938), (540, 39056), (576, 36615), (720, 29292), (864, 24410), (960, 21969), (1080, 19528), (1440, 14646), (1728, 12205), (2160, 9764), (2441, 8640), (2880, 7323), (4320, 4882)]