21431928

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:181

約数の個数: 128

約数和(自身を含む): 65318400

約数和(自身を除く): 43886472

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 29, 42, 53, 56, 58, 83, 84, 87, 106, 116, 159, 166, 168, 174, 203, 212, 232, 249, 318, 332, 348, 371, 406, 424, 498, 581, 609, 636, 664, 696, 742, 812, 996, 1113, 1162, 1218, 1272, 1484, 1537, 1624, 1743, 1992, 2226, 2324, 2407, 2436, 2968, 3074, 3486, 4399, 4452, 4611, 4648, 4814, 4872, 6148, 6972, 7221, 8798, 8904, 9222, 9628, 10759, 12296, 13197, 13944, 14442, 16849, 17596, 18444, 19256, 21518, 26394, 28884, 30793, 32277, 33698, 35192, 36888, 43036, 50547, 52788, 57768, 61586, 64554, 67396, 86072, 92379, 101094, 105576, 123172, 127571, 129108, 134792, 184758, 202188, 246344, 255142, 258216, 369516, 382713, 404376, 510284, 739032, 765426, 892997, 1020568, 1530852, 1785994, 2678991, 3061704, 3571988, 5357982, 7143976, 10715964, 21431928]

約数ペア:

[(1, 21431928), (2, 10715964), (3, 7143976), (4, 5357982), (6, 3571988), (7, 3061704), (8, 2678991), (12, 1785994), (14, 1530852), (21, 1020568), (24, 892997), (28, 765426), (29, 739032), (42, 510284), (53, 404376), (56, 382713), (58, 369516), (83, 258216), (84, 255142), (87, 246344), (106, 202188), (116, 184758), (159, 134792), (166, 129108), (168, 127571), (174, 123172), (203, 105576), (212, 101094), (232, 92379), (249, 86072), (318, 67396), (332, 64554), (348, 61586), (371, 57768), (406, 52788), (424, 50547), (498, 43036), (581, 36888), (609, 35192), (636, 33698), (664, 32277), (696, 30793), (742, 28884), (812, 26394), (996, 21518), (1113, 19256), (1162, 18444), (1218, 17596), (1272, 16849), (1484, 14442), (1537, 13944), (1624, 13197), (1743, 12296), (1992, 10759), (2226, 9628), (2324, 9222), (2407, 8904), (2436, 8798), (2968, 7221), (3074, 6972), (3486, 6148), (4399, 4872), (4452, 4814), (4611, 4648)]