21123492

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:177

約数の個数: 96

約数和(自身を含む): 56297472

約数和(自身を除く): 35173980

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 43, 47, 52, 67, 78, 86, 94, 129, 134, 141, 156, 172, 188, 201, 258, 268, 282, 402, 516, 559, 564, 611, 804, 871, 1118, 1222, 1677, 1742, 1833, 2021, 2236, 2444, 2613, 2881, 3149, 3354, 3484, 3666, 4042, 5226, 5762, 6063, 6298, 6708, 7332, 8084, 8643, 9447, 10452, 11524, 12126, 12596, 17286, 18894, 24252, 26273, 34572, 37453, 37788, 40937, 52546, 74906, 78819, 81874, 105092, 112359, 122811, 135407, 149812, 157638, 163748, 224718, 245622, 270814, 315276, 406221, 449436, 491244, 541628, 812442, 1624884, 1760291, 3520582, 5280873, 7041164, 10561746, 21123492]

約数ペア:

[(1, 21123492), (2, 10561746), (3, 7041164), (4, 5280873), (6, 3520582), (12, 1760291), (13, 1624884), (26, 812442), (39, 541628), (43, 491244), (47, 449436), (52, 406221), (67, 315276), (78, 270814), (86, 245622), (94, 224718), (129, 163748), (134, 157638), (141, 149812), (156, 135407), (172, 122811), (188, 112359), (201, 105092), (258, 81874), (268, 78819), (282, 74906), (402, 52546), (516, 40937), (559, 37788), (564, 37453), (611, 34572), (804, 26273), (871, 24252), (1118, 18894), (1222, 17286), (1677, 12596), (1742, 12126), (1833, 11524), (2021, 10452), (2236, 9447), (2444, 8643), (2613, 8084), (2881, 7332), (3149, 6708), (3354, 6298), (3484, 6063), (3666, 5762), (4042, 5226)]