About the Number

399002020

399002019 ← → 399002021

2進数表記:10111110010000100100110100100

漢数字表記:三億九千九百万二千二十

素因数分解:

2 2 × 5 1 × 53 1 × 376417 1

素因数の和:376479
約数の個数: 24
約数和(自身を含む): 853716024
約数和(自身を除く): 454714004

約数列:
[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 376417, 752834, 1505668, 1882085, 3764170, 7528340, 19950101, 39900202, 79800404, 99750505, 199501010, 399002020]

約数ペア:
[(1, 399002020), (2, 199501010), (4, 99750505), (5, 79800404), (10, 39900202), (20, 19950101), (53, 7528340), (106, 3764170), (212, 1882085), (265, 1505668), (530, 752834), (1060, 376417)]

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