About the Number

31157390

31157389 ← → 31157391

2進数表記:1110110110110110010001110

漢数字表記:三千百十五万七千三百九十

素因数分解:

2 1 × 5 1 × 11 1 × 149 1 × 1901 1

素因数の和:2068
約数の個数: 32
約数和(自身を含む): 61624800
約数和(自身を除く): 30467410

約数列:
[1, 2, 5, 10, 11, 22, 55, 110, 149, 298, 745, 1490, 1639, 1901, 3278, 3802, 8195, 9505, 16390, 19010, 20911, 41822, 104555, 209110, 283249, 566498, 1416245, 2832490, 3115739, 6231478, 15578695, 31157390]

約数ペア:
[(1, 31157390), (2, 15578695), (5, 6231478), (10, 3115739), (11, 2832490), (22, 1416245), (55, 566498), (110, 283249), (149, 209110), (298, 104555), (745, 41822), (1490, 20911), (1639, 19010), (1901, 16390), (3278, 9505), (3802, 8195)]

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