20448480

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1$

素因数の和:173

約数の個数: 192

約数和(自身を含む): 72394560

約数和(自身を除く): 51946080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 29, 30, 32, 39, 40, 48, 52, 58, 60, 65, 78, 80, 87, 96, 104, 113, 116, 120, 130, 145, 156, 160, 174, 195, 208, 226, 232, 240, 260, 290, 312, 339, 348, 377, 390, 416, 435, 452, 464, 480, 520, 565, 580, 624, 678, 696, 754, 780, 870, 904, 928, 1040, 1130, 1131, 1160, 1248, 1356, 1392, 1469, 1508, 1560, 1695, 1740, 1808, 1885, 2080, 2260, 2262, 2320, 2712, 2784, 2938, 3016, 3120, 3277, 3390, 3480, 3616, 3770, 4407, 4520, 4524, 4640, 5424, 5655, 5876, 6032, 6240, 6554, 6780, 6960, 7345, 7540, 8814, 9040, 9048, 9831, 10848, 11310, 11752, 12064, 13108, 13560, 13920, 14690, 15080, 16385, 17628, 18080, 18096, 19662, 22035, 22620, 23504, 26216, 27120, 29380, 30160, 32770, 35256, 36192, 39324, 42601, 44070, 45240, 47008, 49155, 52432, 54240, 58760, 60320, 65540, 70512, 78648, 85202, 88140, 90480, 98310, 104864, 117520, 127803, 131080, 141024, 157296, 170404, 176280, 180960, 196620, 213005, 235040, 255606, 262160, 314592, 340808, 352560, 393240, 426010, 511212, 524320, 639015, 681616, 705120, 786480, 852020, 1022424, 1278030, 1363232, 1572960, 1704040, 2044848, 2556060, 3408080, 4089696, 5112120, 6816160, 10224240, 20448480]

約数ペア:

[(1, 20448480), (2, 10224240), (3, 6816160), (4, 5112120), (5, 4089696), (6, 3408080), (8, 2556060), (10, 2044848), (12, 1704040), (13, 1572960), (15, 1363232), (16, 1278030), (20, 1022424), (24, 852020), (26, 786480), (29, 705120), (30, 681616), (32, 639015), (39, 524320), (40, 511212), (48, 426010), (52, 393240), (58, 352560), (60, 340808), (65, 314592), (78, 262160), (80, 255606), (87, 235040), (96, 213005), (104, 196620), (113, 180960), (116, 176280), (120, 170404), (130, 157296), (145, 141024), (156, 131080), (160, 127803), (174, 117520), (195, 104864), (208, 98310), (226, 90480), (232, 88140), (240, 85202), (260, 78648), (290, 70512), (312, 65540), (339, 60320), (348, 58760), (377, 54240), (390, 52432), (416, 49155), (435, 47008), (452, 45240), (464, 44070), (480, 42601), (520, 39324), (565, 36192), (580, 35256), (624, 32770), (678, 30160), (696, 29380), (754, 27120), (780, 26216), (870, 23504), (904, 22620), (928, 22035), (1040, 19662), (1130, 18096), (1131, 18080), (1160, 17628), (1248, 16385), (1356, 15080), (1392, 14690), (1469, 13920), (1508, 13560), (1560, 13108), (1695, 12064), (1740, 11752), (1808, 11310), (1885, 10848), (2080, 9831), (2260, 9048), (2262, 9040), (2320, 8814), (2712, 7540), (2784, 7345), (2938, 6960), (3016, 6780), (3120, 6554), (3277, 6240), (3390, 6032), (3480, 5876), (3616, 5655), (3770, 5424), (4407, 4640), (4520, 4524)]