21964000

素因数分解:

$2^5\times 5^3\times {\mathrm{17}}^2\times {\mathrm{19}}^1$

素因数の和:78

約数の個数: 144

約数和(自身を含む): 60343920

約数和(自身を除く): 38379920

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 25, 32, 34, 38, 40, 50, 68, 76, 80, 85, 95, 100, 125, 136, 152, 160, 170, 190, 200, 250, 272, 289, 304, 323, 340, 380, 400, 425, 475, 500, 544, 578, 608, 646, 680, 760, 800, 850, 950, 1000, 1156, 1292, 1360, 1445, 1520, 1615, 1700, 1900, 2000, 2125, 2312, 2375, 2584, 2720, 2890, 3040, 3230, 3400, 3800, 4000, 4250, 4624, 4750, 5168, 5491, 5780, 6460, 6800, 7225, 7600, 8075, 8500, 9248, 9500, 10336, 10982, 11560, 12920, 13600, 14450, 15200, 16150, 17000, 19000, 21964, 23120, 25840, 27455, 28900, 32300, 34000, 36125, 38000, 40375, 43928, 46240, 51680, 54910, 57800, 64600, 68000, 72250, 76000, 80750, 87856, 109820, 115600, 129200, 137275, 144500, 161500, 175712, 219640, 231200, 258400, 274550, 289000, 323000, 439280, 549100, 578000, 646000, 686375, 878560, 1098200, 1156000, 1292000, 1372750, 2196400, 2745500, 4392800, 5491000, 10982000, 21964000]

約数ペア:

[(1, 21964000), (2, 10982000), (4, 5491000), (5, 4392800), (8, 2745500), (10, 2196400), (16, 1372750), (17, 1292000), (19, 1156000), (20, 1098200), (25, 878560), (32, 686375), (34, 646000), (38, 578000), (40, 549100), (50, 439280), (68, 323000), (76, 289000), (80, 274550), (85, 258400), (95, 231200), (100, 219640), (125, 175712), (136, 161500), (152, 144500), (160, 137275), (170, 129200), (190, 115600), (200, 109820), (250, 87856), (272, 80750), (289, 76000), (304, 72250), (323, 68000), (340, 64600), (380, 57800), (400, 54910), (425, 51680), (475, 46240), (500, 43928), (544, 40375), (578, 38000), (608, 36125), (646, 34000), (680, 32300), (760, 28900), (800, 27455), (850, 25840), (950, 23120), (1000, 21964), (1156, 19000), (1292, 17000), (1360, 16150), (1445, 15200), (1520, 14450), (1615, 13600), (1700, 12920), (1900, 11560), (2000, 10982), (2125, 10336), (2312, 9500), (2375, 9248), (2584, 8500), (2720, 8075), (2890, 7600), (3040, 7225), (3230, 6800), (3400, 6460), (3800, 5780), (4000, 5491), (4250, 5168), (4624, 4750)]