20745720

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{337}}^1$

素因数の和:379

約数の個数: 160

約数和(自身を含む): 73616400

約数和(自身を除く): 52870680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 54, 57, 60, 72, 76, 81, 90, 95, 108, 114, 120, 135, 152, 162, 171, 180, 190, 216, 228, 270, 285, 324, 337, 342, 360, 380, 405, 456, 513, 540, 570, 648, 674, 684, 760, 810, 855, 1011, 1026, 1080, 1140, 1348, 1368, 1539, 1620, 1685, 1710, 2022, 2052, 2280, 2565, 2696, 3033, 3078, 3240, 3370, 3420, 4044, 4104, 5055, 5130, 6066, 6156, 6403, 6740, 6840, 7695, 8088, 9099, 10110, 10260, 12132, 12312, 12806, 13480, 15165, 15390, 18198, 19209, 20220, 20520, 24264, 25612, 27297, 30330, 30780, 32015, 36396, 38418, 40440, 45495, 51224, 54594, 57627, 60660, 61560, 64030, 72792, 76836, 90990, 96045, 109188, 115254, 121320, 128060, 136485, 153672, 172881, 181980, 192090, 218376, 230508, 256120, 272970, 288135, 345762, 363960, 384180, 461016, 518643, 545940, 576270, 691524, 768360, 864405, 1037286, 1091880, 1152540, 1383048, 1728810, 2074572, 2305080, 2593215, 3457620, 4149144, 5186430, 6915240, 10372860, 20745720]

約数ペア:

[(1, 20745720), (2, 10372860), (3, 6915240), (4, 5186430), (5, 4149144), (6, 3457620), (8, 2593215), (9, 2305080), (10, 2074572), (12, 1728810), (15, 1383048), (18, 1152540), (19, 1091880), (20, 1037286), (24, 864405), (27, 768360), (30, 691524), (36, 576270), (38, 545940), (40, 518643), (45, 461016), (54, 384180), (57, 363960), (60, 345762), (72, 288135), (76, 272970), (81, 256120), (90, 230508), (95, 218376), (108, 192090), (114, 181980), (120, 172881), (135, 153672), (152, 136485), (162, 128060), (171, 121320), (180, 115254), (190, 109188), (216, 96045), (228, 90990), (270, 76836), (285, 72792), (324, 64030), (337, 61560), (342, 60660), (360, 57627), (380, 54594), (405, 51224), (456, 45495), (513, 40440), (540, 38418), (570, 36396), (648, 32015), (674, 30780), (684, 30330), (760, 27297), (810, 25612), (855, 24264), (1011, 20520), (1026, 20220), (1080, 19209), (1140, 18198), (1348, 15390), (1368, 15165), (1539, 13480), (1620, 12806), (1685, 12312), (1710, 12132), (2022, 10260), (2052, 10110), (2280, 9099), (2565, 8088), (2696, 7695), (3033, 6840), (3078, 6740), (3240, 6403), (3370, 6156), (3420, 6066), (4044, 5130), (4104, 5055)]