About the Number

1681221906

1681221905 ← → 1681221907

2進数表記:1100100001101010110100100010010

漢数字表記:十六億八千百二十二万千九百六

素因数分解:

2 1 × 3 4 × 7 1 × 13 1 × 114043 1

素因数の和:114077
約数の個数: 80
約数和(自身を含む): 4636572864
約数和(自身を除く): 2955350958

約数列:
[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 39, 42, 54, 63, 78, 81, 91, 117, 126, 162, 182, 189, 234, 273, 351, 378, 546, 567, 702, 819, 1053, 1134, 1638, 2106, 2457, 4914, 7371, 14742, 114043, 228086, 342129, 684258, 798301, 1026387, 1482559, 1596602, 2052774, 2394903, 2965118, 3079161, 4447677, 4789806, 6158322, 7184709, 8895354, 9237483, 10377913, 13343031, 14369418, 18474966, 20755826, 21554127, 26686062, 31133739, 40029093, 43108254, 62267478, 64662381, 80058186, 93401217, 120087279, 129324762, 186802434, 240174558, 280203651, 560407302, 840610953, 1681221906]

約数ペア:
[(1, 1681221906), (2, 840610953), (3, 560407302), (6, 280203651), (7, 240174558), (9, 186802434), (13, 129324762), (14, 120087279), (18, 93401217), (21, 80058186), (26, 64662381), (27, 62267478), (39, 43108254), (42, 40029093), (54, 31133739), (63, 26686062), (78, 21554127), (81, 20755826), (91, 18474966), (117, 14369418), (126, 13343031), (162, 10377913), (182, 9237483), (189, 8895354), (234, 7184709), (273, 6158322), (351, 4789806), (378, 4447677), (546, 3079161), (567, 2965118), (702, 2394903), (819, 2052774), (1053, 1596602), (1134, 1482559), (1638, 1026387), (2106, 798301), (2457, 684258), (4914, 342129), (7371, 228086), (14742, 114043)]

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