20712240

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:288

約数の個数: 160

約数和(自身を含む): 73328640

約数和(自身を除く): 52616400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 43, 45, 48, 54, 60, 72, 80, 86, 90, 108, 120, 129, 135, 144, 172, 180, 215, 216, 223, 240, 258, 270, 344, 360, 387, 430, 432, 446, 516, 540, 645, 669, 688, 720, 774, 860, 892, 1032, 1080, 1115, 1161, 1290, 1338, 1548, 1720, 1784, 1935, 2007, 2064, 2160, 2230, 2322, 2580, 2676, 3096, 3345, 3440, 3568, 3870, 4014, 4460, 4644, 5160, 5352, 5805, 6021, 6192, 6690, 7740, 8028, 8920, 9288, 9589, 10035, 10320, 10704, 11610, 12042, 13380, 15480, 16056, 17840, 18576, 19178, 20070, 23220, 24084, 26760, 28767, 30105, 30960, 32112, 38356, 40140, 46440, 47945, 48168, 53520, 57534, 60210, 76712, 80280, 86301, 92880, 95890, 96336, 115068, 120420, 143835, 153424, 160560, 172602, 191780, 230136, 240840, 258903, 287670, 345204, 383560, 431505, 460272, 481680, 517806, 575340, 690408, 767120, 863010, 1035612, 1150680, 1294515, 1380816, 1726020, 2071224, 2301360, 2589030, 3452040, 4142448, 5178060, 6904080, 10356120, 20712240]

約数ペア:

[(1, 20712240), (2, 10356120), (3, 6904080), (4, 5178060), (5, 4142448), (6, 3452040), (8, 2589030), (9, 2301360), (10, 2071224), (12, 1726020), (15, 1380816), (16, 1294515), (18, 1150680), (20, 1035612), (24, 863010), (27, 767120), (30, 690408), (36, 575340), (40, 517806), (43, 481680), (45, 460272), (48, 431505), (54, 383560), (60, 345204), (72, 287670), (80, 258903), (86, 240840), (90, 230136), (108, 191780), (120, 172602), (129, 160560), (135, 153424), (144, 143835), (172, 120420), (180, 115068), (215, 96336), (216, 95890), (223, 92880), (240, 86301), (258, 80280), (270, 76712), (344, 60210), (360, 57534), (387, 53520), (430, 48168), (432, 47945), (446, 46440), (516, 40140), (540, 38356), (645, 32112), (669, 30960), (688, 30105), (720, 28767), (774, 26760), (860, 24084), (892, 23220), (1032, 20070), (1080, 19178), (1115, 18576), (1161, 17840), (1290, 16056), (1338, 15480), (1548, 13380), (1720, 12042), (1784, 11610), (1935, 10704), (2007, 10320), (2064, 10035), (2160, 9589), (2230, 9288), (2322, 8920), (2580, 8028), (2676, 7740), (3096, 6690), (3345, 6192), (3440, 6021), (3568, 5805), (3870, 5352), (4014, 5160), (4460, 4644)]