About the Number

209315890

209315889 ← → 209315891

2進数表記:1100011110011110100000110010

漢数字表記:二億九百三十一万五千八百九十

素因数分解:

2 1 × 5 1 × 7 1 × 2990227 1

素因数の和:2990241
約数の個数: 16
約数和(自身を含む): 430592832
約数和(自身を除く): 221276942

約数列:
[1, 2, 5, 7, 10, 14, 35, 70, 2990227, 5980454, 14951135, 20931589, 29902270, 41863178, 104657945, 209315890]

約数ペア:
[(1, 209315890), (2, 104657945), (5, 41863178), (7, 29902270), (10, 20931589), (14, 14951135), (35, 5980454), (70, 2990227)]

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