21075498

素因数分解:

$2^1\times 3^3\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:344

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 28690902

約数列:

[1, 2, 3, 6, 9, 18, 23, 27, 46, 54, 69, 71, 138, 142, 207, 213, 239, 414, 426, 478, 621, 639, 717, 1242, 1278, 1434, 1633, 1917, 2151, 3266, 3834, 4302, 4899, 5497, 6453, 9798, 10994, 12906, 14697, 16491, 16969, 29394, 32982, 33938, 44091, 49473, 50907, 88182, 98946, 101814, 148419, 152721, 296838, 305442, 390287, 458163, 780574, 916326, 1170861, 2341722, 3512583, 7025166, 10537749, 21075498]

約数ペア:

[(1, 21075498), (2, 10537749), (3, 7025166), (6, 3512583), (9, 2341722), (18, 1170861), (23, 916326), (27, 780574), (46, 458163), (54, 390287), (69, 305442), (71, 296838), (138, 152721), (142, 148419), (207, 101814), (213, 98946), (239, 88182), (414, 50907), (426, 49473), (478, 44091), (621, 33938), (639, 32982), (717, 29394), (1242, 16969), (1278, 16491), (1434, 14697), (1633, 12906), (1917, 10994), (2151, 9798), (3266, 6453), (3834, 5497), (4302, 4899)]