20168280

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{463}}^1$

素因数の和:502

約数の個数: 144

約数和(自身を含む): 72203040

約数和(自身を除く): 52034760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 121, 132, 165, 180, 198, 220, 242, 264, 330, 360, 363, 396, 440, 463, 484, 495, 605, 660, 726, 792, 926, 968, 990, 1089, 1210, 1320, 1389, 1452, 1815, 1852, 1980, 2178, 2315, 2420, 2778, 2904, 3630, 3704, 3960, 4167, 4356, 4630, 4840, 5093, 5445, 5556, 6945, 7260, 8334, 8712, 9260, 10186, 10890, 11112, 13890, 14520, 15279, 16668, 18520, 20372, 20835, 21780, 25465, 27780, 30558, 33336, 40744, 41670, 43560, 45837, 50930, 55560, 56023, 61116, 76395, 83340, 91674, 101860, 112046, 122232, 152790, 166680, 168069, 183348, 203720, 224092, 229185, 280115, 305580, 336138, 366696, 448184, 458370, 504207, 560230, 611160, 672276, 840345, 916740, 1008414, 1120460, 1344552, 1680690, 1833480, 2016828, 2240920, 2521035, 3361380, 4033656, 5042070, 6722760, 10084140, 20168280]

約数ペア:

[(1, 20168280), (2, 10084140), (3, 6722760), (4, 5042070), (5, 4033656), (6, 3361380), (8, 2521035), (9, 2240920), (10, 2016828), (11, 1833480), (12, 1680690), (15, 1344552), (18, 1120460), (20, 1008414), (22, 916740), (24, 840345), (30, 672276), (33, 611160), (36, 560230), (40, 504207), (44, 458370), (45, 448184), (55, 366696), (60, 336138), (66, 305580), (72, 280115), (88, 229185), (90, 224092), (99, 203720), (110, 183348), (120, 168069), (121, 166680), (132, 152790), (165, 122232), (180, 112046), (198, 101860), (220, 91674), (242, 83340), (264, 76395), (330, 61116), (360, 56023), (363, 55560), (396, 50930), (440, 45837), (463, 43560), (484, 41670), (495, 40744), (605, 33336), (660, 30558), (726, 27780), (792, 25465), (926, 21780), (968, 20835), (990, 20372), (1089, 18520), (1210, 16668), (1320, 15279), (1389, 14520), (1452, 13890), (1815, 11112), (1852, 10890), (1980, 10186), (2178, 9260), (2315, 8712), (2420, 8334), (2778, 7260), (2904, 6945), (3630, 5556), (3704, 5445), (3960, 5093), (4167, 4840), (4356, 4630)]