21013812

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{619}}^1$

素因数の和:693

約数の個数: 72

約数和(自身を含む): 56871360

約数和(自身を除く): 35857548

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 41, 46, 69, 82, 92, 123, 138, 164, 207, 246, 276, 369, 414, 492, 619, 738, 828, 943, 1238, 1476, 1857, 1886, 2476, 2829, 3714, 3772, 5571, 5658, 7428, 8487, 11142, 11316, 14237, 16974, 22284, 25379, 28474, 33948, 42711, 50758, 56948, 76137, 85422, 101516, 128133, 152274, 170844, 228411, 256266, 304548, 456822, 512532, 583717, 913644, 1167434, 1751151, 2334868, 3502302, 5253453, 7004604, 10506906, 21013812]

約数ペア:

[(1, 21013812), (2, 10506906), (3, 7004604), (4, 5253453), (6, 3502302), (9, 2334868), (12, 1751151), (18, 1167434), (23, 913644), (36, 583717), (41, 512532), (46, 456822), (69, 304548), (82, 256266), (92, 228411), (123, 170844), (138, 152274), (164, 128133), (207, 101516), (246, 85422), (276, 76137), (369, 56948), (414, 50758), (492, 42711), (619, 33948), (738, 28474), (828, 25379), (943, 22284), (1238, 16974), (1476, 14237), (1857, 11316), (1886, 11142), (2476, 8487), (2829, 7428), (3714, 5658), (3772, 5571)]