About the Number

128420400

128420399 ← → 128420401

2進数表記:111101001111000101000110000

漢数字表記:一億二千八百四十二万四百

素因数分解:

2 4 × 3 1 × 5 2 × 103 1 × 1039 1

素因数の和:1163
約数の個数: 120
約数和(自身を含む): 415767040
約数和(自身を除く): 287346640

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 48, 50, 60, 75, 80, 100, 103, 120, 150, 200, 206, 240, 300, 309, 400, 412, 515, 600, 618, 824, 1030, 1039, 1200, 1236, 1545, 1648, 2060, 2078, 2472, 2575, 3090, 3117, 4120, 4156, 4944, 5150, 5195, 6180, 6234, 7725, 8240, 8312, 10300, 10390, 12360, 12468, 15450, 15585, 16624, 20600, 20780, 24720, 24936, 25975, 30900, 31170, 41200, 41560, 49872, 51950, 61800, 62340, 77925, 83120, 103900, 107017, 123600, 124680, 155850, 207800, 214034, 249360, 311700, 321051, 415600, 428068, 535085, 623400, 642102, 856136, 1070170, 1246800, 1284204, 1605255, 1712272, 2140340, 2568408, 2675425, 3210510, 4280680, 5136816, 5350850, 6421020, 8026275, 8561360, 10701700, 12842040, 16052550, 21403400, 25684080, 32105100, 42806800, 64210200, 128420400]

約数ペア:
[(1, 128420400), (2, 64210200), (3, 42806800), (4, 32105100), (5, 25684080), (6, 21403400), (8, 16052550), (10, 12842040), (12, 10701700), (15, 8561360), (16, 8026275), (20, 6421020), (24, 5350850), (25, 5136816), (30, 4280680), (40, 3210510), (48, 2675425), (50, 2568408), (60, 2140340), (75, 1712272), (80, 1605255), (100, 1284204), (103, 1246800), (120, 1070170), (150, 856136), (200, 642102), (206, 623400), (240, 535085), (300, 428068), (309, 415600), (400, 321051), (412, 311700), (515, 249360), (600, 214034), (618, 207800), (824, 155850), (1030, 124680), (1039, 123600), (1200, 107017), (1236, 103900), (1545, 83120), (1648, 77925), (2060, 62340), (2078, 61800), (2472, 51950), (2575, 49872), (3090, 41560), (3117, 41200), (4120, 31170), (4156, 30900), (4944, 25975), (5150, 24936), (5195, 24720), (6180, 20780), (6234, 20600), (7725, 16624), (8240, 15585), (8312, 15450), (10300, 12468), (10390, 12360)]

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