About the Number

31290129

31290128 ← → 31290130

2進数表記:1110111010111001100010001

漢数字表記:三千百二十九万百二十九

素因数分解:

3 2 × 13 1 × 31 1 × 8627 1

素因数の和:8677
約数の個数: 24
約数和(自身を含む): 50249472
約数和(自身を除く): 18959343

約数列:
[1, 3, 9, 13, 31, 39, 93, 117, 279, 403, 1209, 3627, 8627, 25881, 77643, 112151, 267437, 336453, 802311, 1009359, 2406933, 3476681, 10430043, 31290129]

約数ペア:
[(1, 31290129), (3, 10430043), (9, 3476681), (13, 2406933), (31, 1009359), (39, 802311), (93, 336453), (117, 267437), (279, 112151), (403, 77643), (1209, 25881), (3627, 8627)]

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