20716560

素因数分解:

$2^4\times 3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:187

約数の個数: 200

約数和(自身を含む): 75620160

約数和(自身を除く): 54903600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 27, 30, 36, 40, 45, 46, 48, 54, 60, 69, 72, 80, 81, 90, 92, 108, 115, 120, 135, 138, 139, 144, 162, 180, 184, 207, 216, 230, 240, 270, 276, 278, 324, 345, 360, 368, 405, 414, 417, 432, 460, 540, 552, 556, 621, 648, 690, 695, 720, 810, 828, 834, 920, 1035, 1080, 1104, 1112, 1242, 1251, 1296, 1380, 1390, 1620, 1656, 1668, 1840, 1863, 2070, 2085, 2160, 2224, 2484, 2502, 2760, 2780, 3105, 3197, 3240, 3312, 3336, 3726, 3753, 4140, 4170, 4968, 5004, 5520, 5560, 6210, 6255, 6394, 6480, 6672, 7452, 7506, 8280, 8340, 9315, 9591, 9936, 10008, 11120, 11259, 12420, 12510, 12788, 14904, 15012, 15985, 16560, 16680, 18630, 18765, 19182, 20016, 22518, 24840, 25020, 25576, 28773, 29808, 30024, 31970, 33360, 37260, 37530, 38364, 45036, 47955, 49680, 50040, 51152, 56295, 57546, 60048, 63940, 74520, 75060, 76728, 86319, 90072, 95910, 100080, 112590, 115092, 127880, 143865, 149040, 150120, 153456, 172638, 180144, 191820, 225180, 230184, 255760, 258957, 287730, 300240, 345276, 383640, 431595, 450360, 460368, 517914, 575460, 690552, 767280, 863190, 900720, 1035828, 1150920, 1294785, 1381104, 1726380, 2071656, 2301840, 2589570, 3452760, 4143312, 5179140, 6905520, 10358280, 20716560]

約数ペア:

[(1, 20716560), (2, 10358280), (3, 6905520), (4, 5179140), (5, 4143312), (6, 3452760), (8, 2589570), (9, 2301840), (10, 2071656), (12, 1726380), (15, 1381104), (16, 1294785), (18, 1150920), (20, 1035828), (23, 900720), (24, 863190), (27, 767280), (30, 690552), (36, 575460), (40, 517914), (45, 460368), (46, 450360), (48, 431595), (54, 383640), (60, 345276), (69, 300240), (72, 287730), (80, 258957), (81, 255760), (90, 230184), (92, 225180), (108, 191820), (115, 180144), (120, 172638), (135, 153456), (138, 150120), (139, 149040), (144, 143865), (162, 127880), (180, 115092), (184, 112590), (207, 100080), (216, 95910), (230, 90072), (240, 86319), (270, 76728), (276, 75060), (278, 74520), (324, 63940), (345, 60048), (360, 57546), (368, 56295), (405, 51152), (414, 50040), (417, 49680), (432, 47955), (460, 45036), (540, 38364), (552, 37530), (556, 37260), (621, 33360), (648, 31970), (690, 30024), (695, 29808), (720, 28773), (810, 25576), (828, 25020), (834, 24840), (920, 22518), (1035, 20016), (1080, 19182), (1104, 18765), (1112, 18630), (1242, 16680), (1251, 16560), (1296, 15985), (1380, 15012), (1390, 14904), (1620, 12788), (1656, 12510), (1668, 12420), (1840, 11259), (1863, 11120), (2070, 10008), (2085, 9936), (2160, 9591), (2224, 9315), (2484, 8340), (2502, 8280), (2760, 7506), (2780, 7452), (3105, 6672), (3197, 6480), (3240, 6394), (3312, 6255), (3336, 6210), (3726, 5560), (3753, 5520), (4140, 5004), (4170, 4968)]