About the Number

131690640

131690639 ← → 131690641

2進数表記:111110110010111000010010000

漢数字表記:一億三千百六十九万六百四十

素因数分解:

2 4 × 3 1 × 5 1 × 23 1 × 23857 1

素因数の和:23896
約数の個数: 80
約数和(自身を含む): 426008448
約数和(自身を除く): 294317808

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 48, 60, 69, 80, 92, 115, 120, 138, 184, 230, 240, 276, 345, 368, 460, 552, 690, 920, 1104, 1380, 1840, 2760, 5520, 23857, 47714, 71571, 95428, 119285, 143142, 190856, 238570, 286284, 357855, 381712, 477140, 548711, 572568, 715710, 954280, 1097422, 1145136, 1431420, 1646133, 1908560, 2194844, 2743555, 2862840, 3292266, 4389688, 5487110, 5725680, 6584532, 8230665, 8779376, 10974220, 13169064, 16461330, 21948440, 26338128, 32922660, 43896880, 65845320, 131690640]

約数ペア:
[(1, 131690640), (2, 65845320), (3, 43896880), (4, 32922660), (5, 26338128), (6, 21948440), (8, 16461330), (10, 13169064), (12, 10974220), (15, 8779376), (16, 8230665), (20, 6584532), (23, 5725680), (24, 5487110), (30, 4389688), (40, 3292266), (46, 2862840), (48, 2743555), (60, 2194844), (69, 1908560), (80, 1646133), (92, 1431420), (115, 1145136), (120, 1097422), (138, 954280), (184, 715710), (230, 572568), (240, 548711), (276, 477140), (345, 381712), (368, 357855), (460, 286284), (552, 238570), (690, 190856), (920, 143142), (1104, 119285), (1380, 95428), (1840, 71571), (2760, 47714), (5520, 23857)]

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