256961328

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{1723}}^1$

素因数の和:1986

約数の個数: 80

約数和(自身を含む): 718287360

約数和(自身を除く): 461326032

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 239, 312, 478, 624, 717, 956, 1434, 1723, 1912, 2868, 3107, 3446, 3824, 5169, 5736, 6214, 6892, 9321, 10338, 11472, 12428, 13784, 18642, 20676, 22399, 24856, 27568, 37284, 41352, 44798, 49712, 67197, 74568, 82704, 89596, 134394, 149136, 179192, 268788, 358384, 411797, 537576, 823594, 1075152, 1235391, 1647188, 2470782, 3294376, 4941564, 5353361, 6588752, 9883128, 10706722, 16060083, 19766256, 21413444, 32120166, 42826888, 64240332, 85653776, 128480664, 256961328]

約数ペア:

[(1, 256961328), (2, 128480664), (3, 85653776), (4, 64240332), (6, 42826888), (8, 32120166), (12, 21413444), (13, 19766256), (16, 16060083), (24, 10706722), (26, 9883128), (39, 6588752), (48, 5353361), (52, 4941564), (78, 3294376), (104, 2470782), (156, 1647188), (208, 1235391), (239, 1075152), (312, 823594), (478, 537576), (624, 411797), (717, 358384), (956, 268788), (1434, 179192), (1723, 149136), (1912, 134394), (2868, 89596), (3107, 82704), (3446, 74568), (3824, 67197), (5169, 49712), (5736, 44798), (6214, 41352), (6892, 37284), (9321, 27568), (10338, 24856), (11472, 22399), (12428, 20676), (13784, 18642)]