31865580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:260

約数の個数: 144

約数和(自身を含む): 103783680

約数和(自身を除く): 71918100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 43, 45, 46, 60, 69, 86, 90, 92, 115, 129, 138, 172, 179, 180, 207, 215, 230, 258, 276, 345, 358, 387, 414, 430, 460, 516, 537, 645, 690, 716, 774, 828, 860, 895, 989, 1035, 1074, 1290, 1380, 1548, 1611, 1790, 1935, 1978, 2070, 2148, 2580, 2685, 2967, 3222, 3580, 3870, 3956, 4117, 4140, 4945, 5370, 5934, 6444, 7697, 7740, 8055, 8234, 8901, 9890, 10740, 11868, 12351, 14835, 15394, 16110, 16468, 17802, 19780, 20585, 23091, 24702, 29670, 30788, 32220, 35604, 37053, 38485, 41170, 44505, 46182, 49404, 59340, 61755, 69273, 74106, 76970, 82340, 89010, 92364, 115455, 123510, 138546, 148212, 153940, 177031, 178020, 185265, 230910, 247020, 277092, 346365, 354062, 370530, 461820, 531093, 692730, 708124, 741060, 885155, 1062186, 1385460, 1593279, 1770310, 2124372, 2655465, 3186558, 3540620, 5310930, 6373116, 7966395, 10621860, 15932790, 31865580]

約数ペア:

[(1, 31865580), (2, 15932790), (3, 10621860), (4, 7966395), (5, 6373116), (6, 5310930), (9, 3540620), (10, 3186558), (12, 2655465), (15, 2124372), (18, 1770310), (20, 1593279), (23, 1385460), (30, 1062186), (36, 885155), (43, 741060), (45, 708124), (46, 692730), (60, 531093), (69, 461820), (86, 370530), (90, 354062), (92, 346365), (115, 277092), (129, 247020), (138, 230910), (172, 185265), (179, 178020), (180, 177031), (207, 153940), (215, 148212), (230, 138546), (258, 123510), (276, 115455), (345, 92364), (358, 89010), (387, 82340), (414, 76970), (430, 74106), (460, 69273), (516, 61755), (537, 59340), (645, 49404), (690, 46182), (716, 44505), (774, 41170), (828, 38485), (860, 37053), (895, 35604), (989, 32220), (1035, 30788), (1074, 29670), (1290, 24702), (1380, 23091), (1548, 20585), (1611, 19780), (1790, 17802), (1935, 16468), (1978, 16110), (2070, 15394), (2148, 14835), (2580, 12351), (2685, 11868), (2967, 10740), (3222, 9890), (3580, 8901), (3870, 8234), (3956, 8055), (4117, 7740), (4140, 7697), (4945, 6444), (5370, 5934)]