20565000

素因数分解:

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

素因数の和:489

約数の個数: 120

約数和(自身を含む): 69751110

約数和(自身を除く): 49186110

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 50, 60, 72, 75, 90, 100, 120, 125, 150, 180, 200, 225, 250, 300, 360, 375, 450, 457, 500, 600, 625, 750, 900, 914, 1000, 1125, 1250, 1371, 1500, 1800, 1828, 1875, 2250, 2285, 2500, 2742, 3000, 3656, 3750, 4113, 4500, 4570, 5000, 5484, 5625, 6855, 7500, 8226, 9000, 9140, 10968, 11250, 11425, 13710, 15000, 16452, 18280, 20565, 22500, 22850, 27420, 32904, 34275, 41130, 45000, 45700, 54840, 57125, 68550, 82260, 91400, 102825, 114250, 137100, 164520, 171375, 205650, 228500, 274200, 285625, 342750, 411300, 457000, 514125, 571250, 685500, 822600, 856875, 1028250, 1142500, 1371000, 1713750, 2056500, 2285000, 2570625, 3427500, 4113000, 5141250, 6855000, 10282500, 20565000]

約数ペア:

[(1, 20565000), (2, 10282500), (3, 6855000), (4, 5141250), (5, 4113000), (6, 3427500), (8, 2570625), (9, 2285000), (10, 2056500), (12, 1713750), (15, 1371000), (18, 1142500), (20, 1028250), (24, 856875), (25, 822600), (30, 685500), (36, 571250), (40, 514125), (45, 457000), (50, 411300), (60, 342750), (72, 285625), (75, 274200), (90, 228500), (100, 205650), (120, 171375), (125, 164520), (150, 137100), (180, 114250), (200, 102825), (225, 91400), (250, 82260), (300, 68550), (360, 57125), (375, 54840), (450, 45700), (457, 45000), (500, 41130), (600, 34275), (625, 32904), (750, 27420), (900, 22850), (914, 22500), (1000, 20565), (1125, 18280), (1250, 16452), (1371, 15000), (1500, 13710), (1800, 11425), (1828, 11250), (1875, 10968), (2250, 9140), (2285, 9000), (2500, 8226), (2742, 7500), (3000, 6855), (3656, 5625), (3750, 5484), (4113, 5000), (4500, 4570)]