81344000

素因数分解:

$2^9\times 5^3\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:105

約数の個数: 160

約数和(自身を含む): 214486272

約数和(自身を除く): 133142272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 41, 50, 62, 64, 80, 82, 100, 124, 125, 128, 155, 160, 164, 200, 205, 248, 250, 256, 310, 320, 328, 400, 410, 496, 500, 512, 620, 640, 656, 775, 800, 820, 992, 1000, 1025, 1240, 1271, 1280, 1312, 1550, 1600, 1640, 1984, 2000, 2050, 2480, 2542, 2560, 2624, 3100, 3200, 3280, 3875, 3968, 4000, 4100, 4960, 5084, 5125, 5248, 6200, 6355, 6400, 6560, 7750, 7936, 8000, 8200, 9920, 10168, 10250, 10496, 12400, 12710, 12800, 13120, 15500, 15872, 16000, 16400, 19840, 20336, 20500, 20992, 24800, 25420, 26240, 31000, 31775, 32000, 32800, 39680, 40672, 41000, 49600, 50840, 52480, 62000, 63550, 64000, 65600, 79360, 81344, 82000, 99200, 101680, 104960, 124000, 127100, 131200, 158875, 162688, 164000, 198400, 203360, 248000, 254200, 262400, 317750, 325376, 328000, 396800, 406720, 496000, 508400, 524800, 635500, 650752, 656000, 813440, 992000, 1016800, 1271000, 1312000, 1626880, 1984000, 2033600, 2542000, 2624000, 3253760, 4067200, 5084000, 8134400, 10168000, 16268800, 20336000, 40672000, 81344000]

約数ペア:

[(1, 81344000), (2, 40672000), (4, 20336000), (5, 16268800), (8, 10168000), (10, 8134400), (16, 5084000), (20, 4067200), (25, 3253760), (31, 2624000), (32, 2542000), (40, 2033600), (41, 1984000), (50, 1626880), (62, 1312000), (64, 1271000), (80, 1016800), (82, 992000), (100, 813440), (124, 656000), (125, 650752), (128, 635500), (155, 524800), (160, 508400), (164, 496000), (200, 406720), (205, 396800), (248, 328000), (250, 325376), (256, 317750), (310, 262400), (320, 254200), (328, 248000), (400, 203360), (410, 198400), (496, 164000), (500, 162688), (512, 158875), (620, 131200), (640, 127100), (656, 124000), (775, 104960), (800, 101680), (820, 99200), (992, 82000), (1000, 81344), (1025, 79360), (1240, 65600), (1271, 64000), (1280, 63550), (1312, 62000), (1550, 52480), (1600, 50840), (1640, 49600), (1984, 41000), (2000, 40672), (2050, 39680), (2480, 32800), (2542, 32000), (2560, 31775), (2624, 31000), (3100, 26240), (3200, 25420), (3280, 24800), (3875, 20992), (3968, 20500), (4000, 20336), (4100, 19840), (4960, 16400), (5084, 16000), (5125, 15872), (5248, 15500), (6200, 13120), (6355, 12800), (6400, 12710), (6560, 12400), (7750, 10496), (7936, 10250), (8000, 10168), (8200, 9920)]