About the Number

27978970

27978969 ← → 27978971

2進数表記:1101010101110110011011010

漢数字表記:二千七百九十七万八千九百七十

素因数分解:

2 1 × 5 1 × 71 1 × 157 1 × 251 1

素因数の和:486
約数の個数: 32
約数和(自身を含む): 51601536
約数和(自身を除く): 23622566

約数列:
[1, 2, 5, 10, 71, 142, 157, 251, 314, 355, 502, 710, 785, 1255, 1570, 2510, 11147, 17821, 22294, 35642, 39407, 55735, 78814, 89105, 111470, 178210, 197035, 394070, 2797897, 5595794, 13989485, 27978970]

約数ペア:
[(1, 27978970), (2, 13989485), (5, 5595794), (10, 2797897), (71, 394070), (142, 197035), (157, 178210), (251, 111470), (314, 89105), (355, 78814), (502, 55735), (710, 39407), (785, 35642), (1255, 22294), (1570, 17821), (2510, 11147)]

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