About the Number

231440640

231440639 ← → 231440641

2進数表記:1101110010111000000100000000

漢数字表記:二億三千百四十四万六百四十

素因数分解:

2 8 × 3 1 × 5 1 × 60271 1

素因数の和:60295
約数の個数: 72
約数和(自身を含む): 739175808
約数和(自身を除く): 507735168

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 640, 768, 960, 1280, 1920, 3840, 60271, 120542, 180813, 241084, 301355, 361626, 482168, 602710, 723252, 904065, 964336, 1205420, 1446504, 1808130, 1928672, 2410840, 2893008, 3616260, 3857344, 4821680, 5786016, 7232520, 7714688, 9643360, 11572032, 14465040, 15429376, 19286720, 23144064, 28930080, 38573440, 46288128, 57860160, 77146880, 115720320, 231440640]

約数ペア:
[(1, 231440640), (2, 115720320), (3, 77146880), (4, 57860160), (5, 46288128), (6, 38573440), (8, 28930080), (10, 23144064), (12, 19286720), (15, 15429376), (16, 14465040), (20, 11572032), (24, 9643360), (30, 7714688), (32, 7232520), (40, 5786016), (48, 4821680), (60, 3857344), (64, 3616260), (80, 2893008), (96, 2410840), (120, 1928672), (128, 1808130), (160, 1446504), (192, 1205420), (240, 964336), (256, 904065), (320, 723252), (384, 602710), (480, 482168), (640, 361626), (768, 301355), (960, 241084), (1280, 180813), (1920, 120542), (3840, 60271)]

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