21757140

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{937}}^1$

素因数の和:998

約数の個数: 96

約数和(自身を含む): 69336960

約数和(自身を除く): 47579820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 43, 45, 54, 60, 86, 90, 108, 129, 135, 172, 180, 215, 258, 270, 387, 430, 516, 540, 645, 774, 860, 937, 1161, 1290, 1548, 1874, 1935, 2322, 2580, 2811, 3748, 3870, 4644, 4685, 5622, 5805, 7740, 8433, 9370, 11244, 11610, 14055, 16866, 18740, 23220, 25299, 28110, 33732, 40291, 42165, 50598, 56220, 80582, 84330, 101196, 120873, 126495, 161164, 168660, 201455, 241746, 252990, 362619, 402910, 483492, 505980, 604365, 725238, 805820, 1087857, 1208730, 1450476, 1813095, 2175714, 2417460, 3626190, 4351428, 5439285, 7252380, 10878570, 21757140]

約数ペア:

[(1, 21757140), (2, 10878570), (3, 7252380), (4, 5439285), (5, 4351428), (6, 3626190), (9, 2417460), (10, 2175714), (12, 1813095), (15, 1450476), (18, 1208730), (20, 1087857), (27, 805820), (30, 725238), (36, 604365), (43, 505980), (45, 483492), (54, 402910), (60, 362619), (86, 252990), (90, 241746), (108, 201455), (129, 168660), (135, 161164), (172, 126495), (180, 120873), (215, 101196), (258, 84330), (270, 80582), (387, 56220), (430, 50598), (516, 42165), (540, 40291), (645, 33732), (774, 28110), (860, 25299), (937, 23220), (1161, 18740), (1290, 16866), (1548, 14055), (1874, 11610), (1935, 11244), (2322, 9370), (2580, 8433), (2811, 7740), (3748, 5805), (3870, 5622), (4644, 4685)]