About the Number

13131387780

13131387779 ← → 13131387781

2進数表記:1100001110101100010001001110000100

漢数字表記:百三十一億三千百三十八万七千七百八十

素因数分解:

2 2 × 3 1 × 5 1 × 7 1 × 31265209 1

素因数の和:31265228
約数の個数: 48
約数和(自身を含む): 42020442240
約数和(自身を除く): 28889054460

約数列:
[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 31265209, 62530418, 93795627, 125060836, 156326045, 187591254, 218856463, 312652090, 375182508, 437712926, 468978135, 625304180, 656569389, 875425852, 937956270, 1094282315, 1313138778, 1875912540, 2188564630, 2626277556, 3282846945, 4377129260, 6565693890, 13131387780]

約数ペア:
[(1, 13131387780), (2, 6565693890), (3, 4377129260), (4, 3282846945), (5, 2626277556), (6, 2188564630), (7, 1875912540), (10, 1313138778), (12, 1094282315), (14, 937956270), (15, 875425852), (20, 656569389), (21, 625304180), (28, 468978135), (30, 437712926), (35, 375182508), (42, 312652090), (60, 218856463), (70, 187591254), (84, 156326045), (105, 125060836), (140, 93795627), (210, 62530418), (420, 31265209)]

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