About the Number

131540280

131540279 ← → 131540281

2進数表記:111110101110010010100111000

漢数字表記:一億三千百五十四万二百八十

素因数分解:

2 3 × 3 1 × 5 1 × 71 1 × 15439 1

素因数の和:15524
約数の個数: 64
約数和(自身を含む): 400204800
約数和(自身を除く): 268664520

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 284, 355, 426, 568, 710, 852, 1065, 1420, 1704, 2130, 2840, 4260, 8520, 15439, 30878, 46317, 61756, 77195, 92634, 123512, 154390, 185268, 231585, 308780, 370536, 463170, 617560, 926340, 1096169, 1852680, 2192338, 3288507, 4384676, 5480845, 6577014, 8769352, 10961690, 13154028, 16442535, 21923380, 26308056, 32885070, 43846760, 65770140, 131540280]

約数ペア:
[(1, 131540280), (2, 65770140), (3, 43846760), (4, 32885070), (5, 26308056), (6, 21923380), (8, 16442535), (10, 13154028), (12, 10961690), (15, 8769352), (20, 6577014), (24, 5480845), (30, 4384676), (40, 3288507), (60, 2192338), (71, 1852680), (120, 1096169), (142, 926340), (213, 617560), (284, 463170), (355, 370536), (426, 308780), (568, 231585), (710, 185268), (852, 154390), (1065, 123512), (1420, 92634), (1704, 77195), (2130, 61756), (2840, 46317), (4260, 30878), (8520, 15439)]

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