About the Number

128431380

128431379 ← → 128431381

2進数表記:111101001111011010100010100

漢数字表記:一億二千八百四十三万千三百八十

素因数分解:

2 2 × 3 1 × 5 1 × 7 1 × 11 1 × 27799 1

素因数の和:27829
約数の個数: 96
約数和(自身を含む): 448358400
約数和(自身を除く): 319927020

約数列:
[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 55, 60, 66, 70, 77, 84, 105, 110, 132, 140, 154, 165, 210, 220, 231, 308, 330, 385, 420, 462, 660, 770, 924, 1155, 1540, 2310, 4620, 27799, 55598, 83397, 111196, 138995, 166794, 194593, 277990, 305789, 333588, 389186, 416985, 555980, 583779, 611578, 778372, 833970, 917367, 972965, 1167558, 1223156, 1528945, 1667940, 1834734, 1945930, 2140523, 2335116, 2918895, 3057890, 3669468, 3891860, 4281046, 4586835, 5837790, 6115780, 6421569, 8562092, 9173670, 10702615, 11675580, 12843138, 18347340, 21405230, 25686276, 32107845, 42810460, 64215690, 128431380]

約数ペア:
[(1, 128431380), (2, 64215690), (3, 42810460), (4, 32107845), (5, 25686276), (6, 21405230), (7, 18347340), (10, 12843138), (11, 11675580), (12, 10702615), (14, 9173670), (15, 8562092), (20, 6421569), (21, 6115780), (22, 5837790), (28, 4586835), (30, 4281046), (33, 3891860), (35, 3669468), (42, 3057890), (44, 2918895), (55, 2335116), (60, 2140523), (66, 1945930), (70, 1834734), (77, 1667940), (84, 1528945), (105, 1223156), (110, 1167558), (132, 972965), (140, 917367), (154, 833970), (165, 778372), (210, 611578), (220, 583779), (231, 555980), (308, 416985), (330, 389186), (385, 333588), (420, 305789), (462, 277990), (660, 194593), (770, 166794), (924, 138995), (1155, 111196), (1540, 83397), (2310, 55598), (4620, 27799)]

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