398400000

素因数分解:

$2^9\times 3^1\times 5^5\times {\mathrm{83}}^1$

素因数の和:129

約数の個数: 240

約数和(自身を含む): 1342601568

約数和(自身を除く): 944201568

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 60, 64, 75, 80, 83, 96, 100, 120, 125, 128, 150, 160, 166, 192, 200, 240, 249, 250, 256, 300, 320, 332, 375, 384, 400, 415, 480, 498, 500, 512, 600, 625, 640, 664, 750, 768, 800, 830, 960, 996, 1000, 1200, 1245, 1250, 1280, 1328, 1500, 1536, 1600, 1660, 1875, 1920, 1992, 2000, 2075, 2400, 2490, 2500, 2560, 2656, 3000, 3125, 3200, 3320, 3750, 3840, 3984, 4000, 4150, 4800, 4980, 5000, 5312, 6000, 6225, 6250, 6400, 6640, 7500, 7680, 7968, 8000, 8300, 9375, 9600, 9960, 10000, 10375, 10624, 12000, 12450, 12500, 12800, 13280, 15000, 15936, 16000, 16600, 18750, 19200, 19920, 20000, 20750, 21248, 24000, 24900, 25000, 26560, 30000, 31125, 31872, 32000, 33200, 37500, 38400, 39840, 40000, 41500, 42496, 48000, 49800, 50000, 51875, 53120, 60000, 62250, 63744, 64000, 66400, 75000, 79680, 80000, 83000, 96000, 99600, 100000, 103750, 106240, 120000, 124500, 127488, 132800, 150000, 155625, 159360, 160000, 166000, 192000, 199200, 200000, 207500, 212480, 240000, 249000, 259375, 265600, 300000, 311250, 318720, 320000, 332000, 398400, 400000, 415000, 480000, 498000, 518750, 531200, 600000, 622500, 637440, 664000, 778125, 796800, 800000, 830000, 960000, 996000, 1037500, 1062400, 1200000, 1245000, 1328000, 1556250, 1593600, 1600000, 1660000, 1992000, 2075000, 2400000, 2490000, 2656000, 3112500, 3187200, 3320000, 3984000, 4150000, 4800000, 4980000, 5312000, 6225000, 6640000, 7968000, 8300000, 9960000, 12450000, 13280000, 15936000, 16600000, 19920000, 24900000, 26560000, 33200000, 39840000, 49800000, 66400000, 79680000, 99600000, 132800000, 199200000, 398400000]

約数ペア:

[(1, 398400000), (2, 199200000), (3, 132800000), (4, 99600000), (5, 79680000), (6, 66400000), (8, 49800000), (10, 39840000), (12, 33200000), (15, 26560000), (16, 24900000), (20, 19920000), (24, 16600000), (25, 15936000), (30, 13280000), (32, 12450000), (40, 9960000), (48, 8300000), (50, 7968000), (60, 6640000), (64, 6225000), (75, 5312000), (80, 4980000), (83, 4800000), (96, 4150000), (100, 3984000), (120, 3320000), (125, 3187200), (128, 3112500), (150, 2656000), (160, 2490000), (166, 2400000), (192, 2075000), (200, 1992000), (240, 1660000), (249, 1600000), (250, 1593600), (256, 1556250), (300, 1328000), (320, 1245000), (332, 1200000), (375, 1062400), (384, 1037500), (400, 996000), (415, 960000), (480, 830000), (498, 800000), (500, 796800), (512, 778125), (600, 664000), (625, 637440), (640, 622500), (664, 600000), (750, 531200), (768, 518750), (800, 498000), (830, 480000), (960, 415000), (996, 400000), (1000, 398400), (1200, 332000), (1245, 320000), (1250, 318720), (1280, 311250), (1328, 300000), (1500, 265600), (1536, 259375), (1600, 249000), (1660, 240000), (1875, 212480), (1920, 207500), (1992, 200000), (2000, 199200), (2075, 192000), (2400, 166000), (2490, 160000), (2500, 159360), (2560, 155625), (2656, 150000), (3000, 132800), (3125, 127488), (3200, 124500), (3320, 120000), (3750, 106240), (3840, 103750), (3984, 100000), (4000, 99600), (4150, 96000), (4800, 83000), (4980, 80000), (5000, 79680), (5312, 75000), (6000, 66400), (6225, 64000), (6250, 63744), (6400, 62250), (6640, 60000), (7500, 53120), (7680, 51875), (7968, 50000), (8000, 49800), (8300, 48000), (9375, 42496), (9600, 41500), (9960, 40000), (10000, 39840), (10375, 38400), (10624, 37500), (12000, 33200), (12450, 32000), (12500, 31872), (12800, 31125), (13280, 30000), (15000, 26560), (15936, 25000), (16000, 24900), (16600, 24000), (18750, 21248), (19200, 20750), (19920, 20000)]