20731500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{271}}^1$

素因数の和:313

約数の個数: 144

約数和(自身を含む): 69503616

約数和(自身を除く): 48772116

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 25, 30, 34, 36, 45, 50, 51, 60, 68, 75, 85, 90, 100, 102, 125, 150, 153, 170, 180, 204, 225, 250, 255, 271, 300, 306, 340, 375, 425, 450, 500, 510, 542, 612, 750, 765, 813, 850, 900, 1020, 1084, 1125, 1275, 1355, 1500, 1530, 1626, 1700, 2125, 2250, 2439, 2550, 2710, 3060, 3252, 3825, 4065, 4250, 4500, 4607, 4878, 5100, 5420, 6375, 6775, 7650, 8130, 8500, 9214, 9756, 12195, 12750, 13550, 13821, 15300, 16260, 18428, 19125, 20325, 23035, 24390, 25500, 27100, 27642, 33875, 38250, 40650, 41463, 46070, 48780, 55284, 60975, 67750, 69105, 76500, 81300, 82926, 92140, 101625, 115175, 121950, 135500, 138210, 165852, 203250, 207315, 230350, 243900, 276420, 304875, 345525, 406500, 414630, 460700, 575875, 609750, 691050, 829260, 1036575, 1151750, 1219500, 1382100, 1727625, 2073150, 2303500, 3455250, 4146300, 5182875, 6910500, 10365750, 20731500]

約数ペア:

[(1, 20731500), (2, 10365750), (3, 6910500), (4, 5182875), (5, 4146300), (6, 3455250), (9, 2303500), (10, 2073150), (12, 1727625), (15, 1382100), (17, 1219500), (18, 1151750), (20, 1036575), (25, 829260), (30, 691050), (34, 609750), (36, 575875), (45, 460700), (50, 414630), (51, 406500), (60, 345525), (68, 304875), (75, 276420), (85, 243900), (90, 230350), (100, 207315), (102, 203250), (125, 165852), (150, 138210), (153, 135500), (170, 121950), (180, 115175), (204, 101625), (225, 92140), (250, 82926), (255, 81300), (271, 76500), (300, 69105), (306, 67750), (340, 60975), (375, 55284), (425, 48780), (450, 46070), (500, 41463), (510, 40650), (542, 38250), (612, 33875), (750, 27642), (765, 27100), (813, 25500), (850, 24390), (900, 23035), (1020, 20325), (1084, 19125), (1125, 18428), (1275, 16260), (1355, 15300), (1500, 13821), (1530, 13550), (1626, 12750), (1700, 12195), (2125, 9756), (2250, 9214), (2439, 8500), (2550, 8130), (2710, 7650), (3060, 6775), (3252, 6375), (3825, 5420), (4065, 5100), (4250, 4878), (4500, 4607)]