About the Number

131129820

131129819 ← → 131129821

2進数表記:111110100001110000111011100

漢数字表記:一億三千百十二万九千八百二十

素因数分解:

2 2 × 3 3 × 5 1 × 139 1 × 1747 1

素因数の和:1904
約数の個数: 96
約数和(自身を含む): 411129600
約数和(自身を除く): 279999780

約数列:
[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 139, 180, 270, 278, 417, 540, 556, 695, 834, 1251, 1390, 1668, 1747, 2085, 2502, 2780, 3494, 3753, 4170, 5004, 5241, 6255, 6988, 7506, 8340, 8735, 10482, 12510, 15012, 15723, 17470, 18765, 20964, 25020, 26205, 31446, 34940, 37530, 47169, 52410, 62892, 75060, 78615, 94338, 104820, 157230, 188676, 235845, 242833, 314460, 471690, 485666, 728499, 943380, 971332, 1214165, 1456998, 2185497, 2428330, 2913996, 3642495, 4370994, 4856660, 6556491, 7284990, 8741988, 10927485, 13112982, 14569980, 21854970, 26225964, 32782455, 43709940, 65564910, 131129820]

約数ペア:
[(1, 131129820), (2, 65564910), (3, 43709940), (4, 32782455), (5, 26225964), (6, 21854970), (9, 14569980), (10, 13112982), (12, 10927485), (15, 8741988), (18, 7284990), (20, 6556491), (27, 4856660), (30, 4370994), (36, 3642495), (45, 2913996), (54, 2428330), (60, 2185497), (90, 1456998), (108, 1214165), (135, 971332), (139, 943380), (180, 728499), (270, 485666), (278, 471690), (417, 314460), (540, 242833), (556, 235845), (695, 188676), (834, 157230), (1251, 104820), (1390, 94338), (1668, 78615), (1747, 75060), (2085, 62892), (2502, 52410), (2780, 47169), (3494, 37530), (3753, 34940), (4170, 31446), (5004, 26205), (5241, 25020), (6255, 20964), (6988, 18765), (7506, 17470), (8340, 15723), (8735, 15012), (10482, 12510)]

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