About the Number

6801990

6801989 ← → 6801991

2進数表記:11001111100101001000110

漢数字表記:六百八十万千九百九十

素因数分解:

2 1 × 3 1 × 5 1 × 13 1 × 107 1 × 163 1

素因数の和:293
約数の個数: 64
約数和(自身を含む): 17853696
約数和(自身を除く): 11051706

約数列:
[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 107, 130, 163, 195, 214, 321, 326, 390, 489, 535, 642, 815, 978, 1070, 1391, 1605, 1630, 2119, 2445, 2782, 3210, 4173, 4238, 4890, 6357, 6955, 8346, 10595, 12714, 13910, 17441, 20865, 21190, 31785, 34882, 41730, 52323, 63570, 87205, 104646, 174410, 226733, 261615, 453466, 523230, 680199, 1133665, 1360398, 2267330, 3400995, 6801990]

約数ペア:
[(1, 6801990), (2, 3400995), (3, 2267330), (5, 1360398), (6, 1133665), (10, 680199), (13, 523230), (15, 453466), (26, 261615), (30, 226733), (39, 174410), (65, 104646), (78, 87205), (107, 63570), (130, 52323), (163, 41730), (195, 34882), (214, 31785), (321, 21190), (326, 20865), (390, 17441), (489, 13910), (535, 12714), (642, 10595), (815, 8346), (978, 6955), (1070, 6357), (1391, 4890), (1605, 4238), (1630, 4173), (2119, 3210), (2445, 2782)]

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