81312256

素因数分解:

$2^9\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:205

約数の個数: 80

約数和(自身を含む): 172846080

約数和(自身を除く): 91533824

約数列:

[1, 2, 4, 8, 16, 31, 32, 47, 62, 64, 94, 109, 124, 128, 188, 218, 248, 256, 376, 436, 496, 512, 752, 872, 992, 1457, 1504, 1744, 1984, 2914, 3008, 3379, 3488, 3968, 5123, 5828, 6016, 6758, 6976, 7936, 10246, 11656, 12032, 13516, 13952, 15872, 20492, 23312, 24064, 27032, 27904, 40984, 46624, 54064, 55808, 81968, 93248, 108128, 158813, 163936, 186496, 216256, 317626, 327872, 372992, 432512, 635252, 655744, 745984, 865024, 1270504, 1311488, 1730048, 2541008, 2622976, 5082016, 10164032, 20328064, 40656128, 81312256]

約数ペア:

[(1, 81312256), (2, 40656128), (4, 20328064), (8, 10164032), (16, 5082016), (31, 2622976), (32, 2541008), (47, 1730048), (62, 1311488), (64, 1270504), (94, 865024), (109, 745984), (124, 655744), (128, 635252), (188, 432512), (218, 372992), (248, 327872), (256, 317626), (376, 216256), (436, 186496), (496, 163936), (512, 158813), (752, 108128), (872, 93248), (992, 81968), (1457, 55808), (1504, 54064), (1744, 46624), (1984, 40984), (2914, 27904), (3008, 27032), (3379, 24064), (3488, 23312), (3968, 20492), (5123, 15872), (5828, 13952), (6016, 13516), (6758, 12032), (6976, 11656), (7936, 10246)]