21717520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:113

約数の個数: 160

約数和(自身を含む): 61067520

約数和(自身を除く): 39350000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 29, 37, 40, 44, 46, 55, 58, 74, 80, 88, 92, 110, 115, 116, 145, 148, 176, 184, 185, 220, 230, 232, 253, 290, 296, 319, 368, 370, 407, 440, 460, 464, 506, 580, 592, 638, 667, 740, 814, 851, 880, 920, 1012, 1073, 1160, 1265, 1276, 1334, 1480, 1595, 1628, 1702, 1840, 2024, 2035, 2146, 2320, 2530, 2552, 2668, 2960, 3190, 3256, 3335, 3404, 4048, 4070, 4255, 4292, 5060, 5104, 5336, 5365, 6380, 6512, 6670, 6808, 7337, 8140, 8510, 8584, 9361, 10120, 10672, 10730, 11803, 12760, 13340, 13616, 14674, 16280, 17020, 17168, 18722, 20240, 21460, 23606, 24679, 25520, 26680, 29348, 32560, 34040, 36685, 37444, 42920, 46805, 47212, 49358, 53360, 58696, 59015, 68080, 73370, 74888, 85840, 93610, 94424, 98716, 117392, 118030, 123395, 146740, 149776, 187220, 188848, 197432, 236060, 246790, 271469, 293480, 374440, 394864, 472120, 493580, 542938, 586960, 748880, 944240, 987160, 1085876, 1357345, 1974320, 2171752, 2714690, 4343504, 5429380, 10858760, 21717520]

約数ペア:

[(1, 21717520), (2, 10858760), (4, 5429380), (5, 4343504), (8, 2714690), (10, 2171752), (11, 1974320), (16, 1357345), (20, 1085876), (22, 987160), (23, 944240), (29, 748880), (37, 586960), (40, 542938), (44, 493580), (46, 472120), (55, 394864), (58, 374440), (74, 293480), (80, 271469), (88, 246790), (92, 236060), (110, 197432), (115, 188848), (116, 187220), (145, 149776), (148, 146740), (176, 123395), (184, 118030), (185, 117392), (220, 98716), (230, 94424), (232, 93610), (253, 85840), (290, 74888), (296, 73370), (319, 68080), (368, 59015), (370, 58696), (407, 53360), (440, 49358), (460, 47212), (464, 46805), (506, 42920), (580, 37444), (592, 36685), (638, 34040), (667, 32560), (740, 29348), (814, 26680), (851, 25520), (880, 24679), (920, 23606), (1012, 21460), (1073, 20240), (1160, 18722), (1265, 17168), (1276, 17020), (1334, 16280), (1480, 14674), (1595, 13616), (1628, 13340), (1702, 12760), (1840, 11803), (2024, 10730), (2035, 10672), (2146, 10120), (2320, 9361), (2530, 8584), (2552, 8510), (2668, 8140), (2960, 7337), (3190, 6808), (3256, 6670), (3335, 6512), (3404, 6380), (4048, 5365), (4070, 5336), (4255, 5104), (4292, 5060)]