64894000

素因数分解:

$2^4\times 5^3\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:551

約数の個数: 80

約数和(自身を含む): 159471936

約数和(自身を除く): 94577936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 71, 80, 100, 125, 142, 200, 250, 284, 355, 400, 457, 500, 568, 710, 914, 1000, 1136, 1420, 1775, 1828, 2000, 2285, 2840, 3550, 3656, 4570, 5680, 7100, 7312, 8875, 9140, 11425, 14200, 17750, 18280, 22850, 28400, 32447, 35500, 36560, 45700, 57125, 64894, 71000, 91400, 114250, 129788, 142000, 162235, 182800, 228500, 259576, 324470, 457000, 519152, 648940, 811175, 914000, 1297880, 1622350, 2595760, 3244700, 4055875, 6489400, 8111750, 12978800, 16223500, 32447000, 64894000]

約数ペア:

[(1, 64894000), (2, 32447000), (4, 16223500), (5, 12978800), (8, 8111750), (10, 6489400), (16, 4055875), (20, 3244700), (25, 2595760), (40, 1622350), (50, 1297880), (71, 914000), (80, 811175), (100, 648940), (125, 519152), (142, 457000), (200, 324470), (250, 259576), (284, 228500), (355, 182800), (400, 162235), (457, 142000), (500, 129788), (568, 114250), (710, 91400), (914, 71000), (1000, 64894), (1136, 57125), (1420, 45700), (1775, 36560), (1828, 35500), (2000, 32447), (2285, 28400), (2840, 22850), (3550, 18280), (3656, 17750), (4570, 14200), (5680, 11425), (7100, 9140), (7312, 8875)]