20421336

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:149

約数の個数: 128

約数和(自身を含む): 59371200

約数和(自身を除く): 38949864

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 29, 37, 39, 52, 58, 61, 74, 78, 87, 104, 111, 116, 122, 148, 156, 174, 183, 222, 232, 244, 296, 312, 348, 366, 377, 444, 481, 488, 696, 732, 754, 793, 888, 962, 1073, 1131, 1443, 1464, 1508, 1586, 1769, 1924, 2146, 2257, 2262, 2379, 2886, 3016, 3172, 3219, 3538, 3848, 4292, 4514, 4524, 4758, 5307, 5772, 6344, 6438, 6771, 7076, 8584, 9028, 9048, 9516, 10614, 11544, 12876, 13542, 13949, 14152, 18056, 19032, 21228, 22997, 25752, 27084, 27898, 29341, 41847, 42456, 45994, 54168, 55796, 58682, 65453, 68991, 83694, 88023, 91988, 111592, 117364, 130906, 137982, 167388, 176046, 183976, 196359, 234728, 261812, 275964, 334776, 352092, 392718, 523624, 551928, 704184, 785436, 850889, 1570872, 1701778, 2552667, 3403556, 5105334, 6807112, 10210668, 20421336]

約数ペア:

[(1, 20421336), (2, 10210668), (3, 6807112), (4, 5105334), (6, 3403556), (8, 2552667), (12, 1701778), (13, 1570872), (24, 850889), (26, 785436), (29, 704184), (37, 551928), (39, 523624), (52, 392718), (58, 352092), (61, 334776), (74, 275964), (78, 261812), (87, 234728), (104, 196359), (111, 183976), (116, 176046), (122, 167388), (148, 137982), (156, 130906), (174, 117364), (183, 111592), (222, 91988), (232, 88023), (244, 83694), (296, 68991), (312, 65453), (348, 58682), (366, 55796), (377, 54168), (444, 45994), (481, 42456), (488, 41847), (696, 29341), (732, 27898), (754, 27084), (793, 25752), (888, 22997), (962, 21228), (1073, 19032), (1131, 18056), (1443, 14152), (1464, 13949), (1508, 13542), (1586, 12876), (1769, 11544), (1924, 10614), (2146, 9516), (2257, 9048), (2262, 9028), (2379, 8584), (2886, 7076), (3016, 6771), (3172, 6438), (3219, 6344), (3538, 5772), (3848, 5307), (4292, 4758), (4514, 4524)]