About the Number

20394790

20394789 ← → 20394791

2進数表記:1001101110011001100100110

漢数字表記:二千三十九万四千七百九十

素因数分解:

2 1 × 5 1 × 13 1 × 19 1 × 23 1 × 359 1

素因数の和:421
約数の個数: 64
約数和(自身を含む): 43545600
約数和(自身を除く): 23150810

約数列:
[1, 2, 5, 10, 13, 19, 23, 26, 38, 46, 65, 95, 115, 130, 190, 230, 247, 299, 359, 437, 494, 598, 718, 874, 1235, 1495, 1795, 2185, 2470, 2990, 3590, 4370, 4667, 5681, 6821, 8257, 9334, 11362, 13642, 16514, 23335, 28405, 34105, 41285, 46670, 56810, 68210, 82570, 88673, 107341, 156883, 177346, 214682, 313766, 443365, 536705, 784415, 886730, 1073410, 1568830, 2039479, 4078958, 10197395, 20394790]

約数ペア:
[(1, 20394790), (2, 10197395), (5, 4078958), (10, 2039479), (13, 1568830), (19, 1073410), (23, 886730), (26, 784415), (38, 536705), (46, 443365), (65, 313766), (95, 214682), (115, 177346), (130, 156883), (190, 107341), (230, 88673), (247, 82570), (299, 68210), (359, 56810), (437, 46670), (494, 41285), (598, 34105), (718, 28405), (874, 23335), (1235, 16514), (1495, 13642), (1795, 11362), (2185, 9334), (2470, 8257), (2990, 6821), (3590, 5681), (4370, 4667)]

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