80905984

素因数分解:

$2^8\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 168875280

約数和(自身を除く): 87969296

約数列:

[1, 2, 4, 8, 16, 32, 53, 64, 67, 89, 106, 128, 134, 178, 212, 256, 268, 356, 424, 536, 712, 848, 1072, 1424, 1696, 2144, 2848, 3392, 3551, 4288, 4717, 5696, 5963, 6784, 7102, 8576, 9434, 11392, 11926, 13568, 14204, 17152, 18868, 22784, 23852, 28408, 37736, 47704, 56816, 75472, 95408, 113632, 150944, 190816, 227264, 301888, 316039, 381632, 454528, 603776, 632078, 763264, 909056, 1207552, 1264156, 1526528, 2528312, 5056624, 10113248, 20226496, 40452992, 80905984]

約数ペア:

[(1, 80905984), (2, 40452992), (4, 20226496), (8, 10113248), (16, 5056624), (32, 2528312), (53, 1526528), (64, 1264156), (67, 1207552), (89, 909056), (106, 763264), (128, 632078), (134, 603776), (178, 454528), (212, 381632), (256, 316039), (268, 301888), (356, 227264), (424, 190816), (536, 150944), (712, 113632), (848, 95408), (1072, 75472), (1424, 56816), (1696, 47704), (2144, 37736), (2848, 28408), (3392, 23852), (3551, 22784), (4288, 18868), (4717, 17152), (5696, 14204), (5963, 13568), (6784, 11926), (7102, 11392), (8576, 9434)]