138880000

素因数分解:

$2^{10}\times 5^4\times 7^1\times {\mathrm{31}}^1$

素因数の和:78

約数の個数: 220

約数和(自身を含む): 409268992

約数和(自身を除く): 270388992

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 31, 32, 35, 40, 50, 56, 62, 64, 70, 80, 100, 112, 124, 125, 128, 140, 155, 160, 175, 200, 217, 224, 248, 250, 256, 280, 310, 320, 350, 400, 434, 448, 496, 500, 512, 560, 620, 625, 640, 700, 775, 800, 868, 875, 896, 992, 1000, 1024, 1085, 1120, 1240, 1250, 1280, 1400, 1550, 1600, 1736, 1750, 1792, 1984, 2000, 2170, 2240, 2480, 2500, 2560, 2800, 3100, 3200, 3472, 3500, 3584, 3875, 3968, 4000, 4340, 4375, 4480, 4960, 5000, 5120, 5425, 5600, 6200, 6400, 6944, 7000, 7168, 7750, 7936, 8000, 8680, 8750, 8960, 9920, 10000, 10850, 11200, 12400, 12800, 13888, 14000, 15500, 15872, 16000, 17360, 17500, 17920, 19375, 19840, 20000, 21700, 22400, 24800, 25600, 27125, 27776, 28000, 31000, 31744, 32000, 34720, 35000, 35840, 38750, 39680, 40000, 43400, 44800, 49600, 54250, 55552, 56000, 62000, 64000, 69440, 70000, 77500, 79360, 80000, 86800, 89600, 99200, 108500, 111104, 112000, 124000, 128000, 135625, 138880, 140000, 155000, 158720, 160000, 173600, 179200, 198400, 217000, 222208, 224000, 248000, 271250, 277760, 280000, 310000, 320000, 347200, 396800, 434000, 448000, 496000, 542500, 555520, 560000, 620000, 640000, 694400, 793600, 868000, 896000, 992000, 1085000, 1111040, 1120000, 1240000, 1388800, 1736000, 1984000, 2170000, 2240000, 2480000, 2777600, 3472000, 3968000, 4340000, 4480000, 4960000, 5555200, 6944000, 8680000, 9920000, 13888000, 17360000, 19840000, 27776000, 34720000, 69440000, 138880000]

約数ペア:

[(1, 138880000), (2, 69440000), (4, 34720000), (5, 27776000), (7, 19840000), (8, 17360000), (10, 13888000), (14, 9920000), (16, 8680000), (20, 6944000), (25, 5555200), (28, 4960000), (31, 4480000), (32, 4340000), (35, 3968000), (40, 3472000), (50, 2777600), (56, 2480000), (62, 2240000), (64, 2170000), (70, 1984000), (80, 1736000), (100, 1388800), (112, 1240000), (124, 1120000), (125, 1111040), (128, 1085000), (140, 992000), (155, 896000), (160, 868000), (175, 793600), (200, 694400), (217, 640000), (224, 620000), (248, 560000), (250, 555520), (256, 542500), (280, 496000), (310, 448000), (320, 434000), (350, 396800), (400, 347200), (434, 320000), (448, 310000), (496, 280000), (500, 277760), (512, 271250), (560, 248000), (620, 224000), (625, 222208), (640, 217000), (700, 198400), (775, 179200), (800, 173600), (868, 160000), (875, 158720), (896, 155000), (992, 140000), (1000, 138880), (1024, 135625), (1085, 128000), (1120, 124000), (1240, 112000), (1250, 111104), (1280, 108500), (1400, 99200), (1550, 89600), (1600, 86800), (1736, 80000), (1750, 79360), (1792, 77500), (1984, 70000), (2000, 69440), (2170, 64000), (2240, 62000), (2480, 56000), (2500, 55552), (2560, 54250), (2800, 49600), (3100, 44800), (3200, 43400), (3472, 40000), (3500, 39680), (3584, 38750), (3875, 35840), (3968, 35000), (4000, 34720), (4340, 32000), (4375, 31744), (4480, 31000), (4960, 28000), (5000, 27776), (5120, 27125), (5425, 25600), (5600, 24800), (6200, 22400), (6400, 21700), (6944, 20000), (7000, 19840), (7168, 19375), (7750, 17920), (7936, 17500), (8000, 17360), (8680, 16000), (8750, 15872), (8960, 15500), (9920, 14000), (10000, 13888), (10850, 12800), (11200, 12400)]