About the Number

129987216

129987215 ← → 129987217

2進数表記:111101111110111001010010000

漢数字表記:一億二千九百九十八万七千二百十六

素因数分解:

2 4 × 3 2 × 31 1 × 37 1 × 787 1

素因数の和:869
約数の個数: 120
約数和(自身を含む): 386157824
約数和(自身を除く): 256170608

約数列:
[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 31, 36, 37, 48, 62, 72, 74, 93, 111, 124, 144, 148, 186, 222, 248, 279, 296, 333, 372, 444, 496, 558, 592, 666, 744, 787, 888, 1116, 1147, 1332, 1488, 1574, 1776, 2232, 2294, 2361, 2664, 3148, 3441, 4464, 4588, 4722, 5328, 6296, 6882, 7083, 9176, 9444, 10323, 12592, 13764, 14166, 18352, 18888, 20646, 24397, 27528, 28332, 29119, 37776, 41292, 48794, 55056, 56664, 58238, 73191, 82584, 87357, 97588, 113328, 116476, 146382, 165168, 174714, 195176, 219573, 232952, 262071, 292764, 349428, 390352, 439146, 465904, 524142, 585528, 698856, 878292, 902689, 1048284, 1171056, 1397712, 1756584, 1805378, 2096568, 2708067, 3513168, 3610756, 4193136, 5416134, 7221512, 8124201, 10832268, 14443024, 16248402, 21664536, 32496804, 43329072, 64993608, 129987216]

約数ペア:
[(1, 129987216), (2, 64993608), (3, 43329072), (4, 32496804), (6, 21664536), (8, 16248402), (9, 14443024), (12, 10832268), (16, 8124201), (18, 7221512), (24, 5416134), (31, 4193136), (36, 3610756), (37, 3513168), (48, 2708067), (62, 2096568), (72, 1805378), (74, 1756584), (93, 1397712), (111, 1171056), (124, 1048284), (144, 902689), (148, 878292), (186, 698856), (222, 585528), (248, 524142), (279, 465904), (296, 439146), (333, 390352), (372, 349428), (444, 292764), (496, 262071), (558, 232952), (592, 219573), (666, 195176), (744, 174714), (787, 165168), (888, 146382), (1116, 116476), (1147, 113328), (1332, 97588), (1488, 87357), (1574, 82584), (1776, 73191), (2232, 58238), (2294, 56664), (2361, 55056), (2664, 48794), (3148, 41292), (3441, 37776), (4464, 29119), (4588, 28332), (4722, 27528), (5328, 24397), (6296, 20646), (6882, 18888), (7083, 18352), (9176, 14166), (9444, 13764), (10323, 12592)]

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