About the Number

30012920

30012919 ← → 30012921

2進数表記:1110010011111010111111000

漢数字表記:三千一万二千九百二十

素因数分解:

2 3 × 5 1 × 7 1 × 37 1 × 2897 1

素因数の和:2952
約数の個数: 64
約数和(自身を含む): 79289280
約数和(自身を除く): 49276360

約数列:
[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 2072, 2590, 2897, 5180, 5794, 10360, 11588, 14485, 20279, 23176, 28970, 40558, 57940, 81116, 101395, 107189, 115880, 162232, 202790, 214378, 405580, 428756, 535945, 750323, 811160, 857512, 1071890, 1500646, 2143780, 3001292, 3751615, 4287560, 6002584, 7503230, 15006460, 30012920]

約数ペア:
[(1, 30012920), (2, 15006460), (4, 7503230), (5, 6002584), (7, 4287560), (8, 3751615), (10, 3001292), (14, 2143780), (20, 1500646), (28, 1071890), (35, 857512), (37, 811160), (40, 750323), (56, 535945), (70, 428756), (74, 405580), (140, 214378), (148, 202790), (185, 162232), (259, 115880), (280, 107189), (296, 101395), (370, 81116), (518, 57940), (740, 40558), (1036, 28970), (1295, 23176), (1480, 20279), (2072, 14485), (2590, 11588), (2897, 10360), (5180, 5794)]

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