About the Number

20642020

20642019 ← → 20642021

2進数表記:1001110101111100011100100

漢数字表記:二千六十四万二千二十

素因数分解:

2 2 × 5 1 × 7 1 × 283 1 × 521 1

素因数の和:820
約数の個数: 48
約数和(自身を含む): 49811328
約数和(自身を除く): 29169308

約数列:
[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 283, 521, 566, 1042, 1132, 1415, 1981, 2084, 2605, 2830, 3647, 3962, 5210, 5660, 7294, 7924, 9905, 10420, 14588, 18235, 19810, 36470, 39620, 72940, 147443, 294886, 589772, 737215, 1032101, 1474430, 2064202, 2948860, 4128404, 5160505, 10321010, 20642020]

約数ペア:
[(1, 20642020), (2, 10321010), (4, 5160505), (5, 4128404), (7, 2948860), (10, 2064202), (14, 1474430), (20, 1032101), (28, 737215), (35, 589772), (70, 294886), (140, 147443), (283, 72940), (521, 39620), (566, 36470), (1042, 19810), (1132, 18235), (1415, 14588), (1981, 10420), (2084, 9905), (2605, 7924), (2830, 7294), (3647, 5660), (3962, 5210)]

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