121720000

素因数分解:

$2^6\times 5^4\times {\mathrm{17}}^1\times {\mathrm{179}}^1$

素因数の和:228

約数の個数: 140

約数和(自身を含む): 321365880

約数和(自身を除く): 199645880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 50, 64, 68, 80, 85, 100, 125, 136, 160, 170, 179, 200, 250, 272, 320, 340, 358, 400, 425, 500, 544, 625, 680, 716, 800, 850, 895, 1000, 1088, 1250, 1360, 1432, 1600, 1700, 1790, 2000, 2125, 2500, 2720, 2864, 3043, 3400, 3580, 4000, 4250, 4475, 5000, 5440, 5728, 6086, 6800, 7160, 8000, 8500, 8950, 10000, 10625, 11456, 12172, 13600, 14320, 15215, 17000, 17900, 20000, 21250, 22375, 24344, 27200, 28640, 30430, 34000, 35800, 40000, 42500, 44750, 48688, 57280, 60860, 68000, 71600, 76075, 85000, 89500, 97376, 111875, 121720, 136000, 143200, 152150, 170000, 179000, 194752, 223750, 243440, 286400, 304300, 340000, 358000, 380375, 447500, 486880, 608600, 680000, 716000, 760750, 895000, 973760, 1217200, 1432000, 1521500, 1790000, 1901875, 2434400, 3043000, 3580000, 3803750, 4868800, 6086000, 7160000, 7607500, 12172000, 15215000, 24344000, 30430000, 60860000, 121720000]

約数ペア:

[(1, 121720000), (2, 60860000), (4, 30430000), (5, 24344000), (8, 15215000), (10, 12172000), (16, 7607500), (17, 7160000), (20, 6086000), (25, 4868800), (32, 3803750), (34, 3580000), (40, 3043000), (50, 2434400), (64, 1901875), (68, 1790000), (80, 1521500), (85, 1432000), (100, 1217200), (125, 973760), (136, 895000), (160, 760750), (170, 716000), (179, 680000), (200, 608600), (250, 486880), (272, 447500), (320, 380375), (340, 358000), (358, 340000), (400, 304300), (425, 286400), (500, 243440), (544, 223750), (625, 194752), (680, 179000), (716, 170000), (800, 152150), (850, 143200), (895, 136000), (1000, 121720), (1088, 111875), (1250, 97376), (1360, 89500), (1432, 85000), (1600, 76075), (1700, 71600), (1790, 68000), (2000, 60860), (2125, 57280), (2500, 48688), (2720, 44750), (2864, 42500), (3043, 40000), (3400, 35800), (3580, 34000), (4000, 30430), (4250, 28640), (4475, 27200), (5000, 24344), (5440, 22375), (5728, 21250), (6086, 20000), (6800, 17900), (7160, 17000), (8000, 15215), (8500, 14320), (8950, 13600), (10000, 12172), (10625, 11456)]