About the Number

131398400

131398399 ← → 131398401

2進数表記:111110101001111101100000000

漢数字表記:一億三千百三十九万八千四百

素因数分解:

2 8 × 5 2 × 7 2 × 419 1

素因数の和:459
約数の個数: 162
約数和(自身を含む): 379233540
約数和(自身を除く): 247835140

約数列:
[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 49, 50, 56, 64, 70, 80, 98, 100, 112, 128, 140, 160, 175, 196, 200, 224, 245, 256, 280, 320, 350, 392, 400, 419, 448, 490, 560, 640, 700, 784, 800, 838, 896, 980, 1120, 1225, 1280, 1400, 1568, 1600, 1676, 1792, 1960, 2095, 2240, 2450, 2800, 2933, 3136, 3200, 3352, 3920, 4190, 4480, 4900, 5600, 5866, 6272, 6400, 6704, 7840, 8380, 8960, 9800, 10475, 11200, 11732, 12544, 13408, 14665, 15680, 16760, 19600, 20531, 20950, 22400, 23464, 26816, 29330, 31360, 33520, 39200, 41062, 41900, 44800, 46928, 53632, 58660, 62720, 67040, 73325, 78400, 82124, 83800, 93856, 102655, 107264, 117320, 134080, 146650, 156800, 164248, 167600, 187712, 205310, 234640, 268160, 293300, 313600, 328496, 335200, 375424, 410620, 469280, 513275, 536320, 586600, 656992, 670400, 750848, 821240, 938560, 1026550, 1173200, 1313984, 1340800, 1642480, 1877120, 2053100, 2346400, 2627968, 2681600, 3284960, 3754240, 4106200, 4692800, 5255936, 6569920, 8212400, 9385600, 13139840, 16424800, 18771200, 26279680, 32849600, 65699200, 131398400]

約数ペア:
[(1, 131398400), (2, 65699200), (4, 32849600), (5, 26279680), (7, 18771200), (8, 16424800), (10, 13139840), (14, 9385600), (16, 8212400), (20, 6569920), (25, 5255936), (28, 4692800), (32, 4106200), (35, 3754240), (40, 3284960), (49, 2681600), (50, 2627968), (56, 2346400), (64, 2053100), (70, 1877120), (80, 1642480), (98, 1340800), (100, 1313984), (112, 1173200), (128, 1026550), (140, 938560), (160, 821240), (175, 750848), (196, 670400), (200, 656992), (224, 586600), (245, 536320), (256, 513275), (280, 469280), (320, 410620), (350, 375424), (392, 335200), (400, 328496), (419, 313600), (448, 293300), (490, 268160), (560, 234640), (640, 205310), (700, 187712), (784, 167600), (800, 164248), (838, 156800), (896, 146650), (980, 134080), (1120, 117320), (1225, 107264), (1280, 102655), (1400, 93856), (1568, 83800), (1600, 82124), (1676, 78400), (1792, 73325), (1960, 67040), (2095, 62720), (2240, 58660), (2450, 53632), (2800, 46928), (2933, 44800), (3136, 41900), (3200, 41062), (3352, 39200), (3920, 33520), (4190, 31360), (4480, 29330), (4900, 26816), (5600, 23464), (5866, 22400), (6272, 20950), (6400, 20531), (6704, 19600), (7840, 16760), (8380, 15680), (8960, 14665), (9800, 13408), (10475, 12544), (11200, 11732)]

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