About the Number

31891890

31891889 ← → 31891891

2進数表記:1111001101010000110110010

漢数字表記:三千百八十九万千八百九十

素因数分解:

2 1 × 3 1 × 5 1 × 103 1 × 10321 1

素因数の和:10434
約数の個数: 32
約数和(自身を含む): 77291136
約数和(自身を除く): 45399246

約数列:
[1, 2, 3, 5, 6, 10, 15, 30, 103, 206, 309, 515, 618, 1030, 1545, 3090, 10321, 20642, 30963, 51605, 61926, 103210, 154815, 309630, 1063063, 2126126, 3189189, 5315315, 6378378, 10630630, 15945945, 31891890]

約数ペア:
[(1, 31891890), (2, 15945945), (3, 10630630), (5, 6378378), (6, 5315315), (10, 3189189), (15, 2126126), (30, 1063063), (103, 309630), (206, 154815), (309, 103210), (515, 61926), (618, 51605), (1030, 30963), (1545, 20642), (3090, 10321)]

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