About the Number

81980115

81980114 ← → 81980116

2進数表記:100111000101110101011010011

漢数字表記:八千百九十八万百十五

素因数分解:

3 1 × 5 1 × 7 1 × 41 1 × 137 1 × 139 1

素因数の和:332
約数の個数: 64
約数和(自身を含む): 155796480
約数和(自身を除く): 73816365

約数列:
[1, 3, 5, 7, 15, 21, 35, 41, 105, 123, 137, 139, 205, 287, 411, 417, 615, 685, 695, 861, 959, 973, 1435, 2055, 2085, 2877, 2919, 4305, 4795, 4865, 5617, 5699, 14385, 14595, 16851, 17097, 19043, 28085, 28495, 39319, 39893, 57129, 84255, 85485, 95215, 117957, 119679, 133301, 196595, 199465, 285645, 399903, 589785, 598395, 666505, 780763, 1999515, 2342289, 3903815, 5465341, 11711445, 16396023, 27326705, 81980115]

約数ペア:
[(1, 81980115), (3, 27326705), (5, 16396023), (7, 11711445), (15, 5465341), (21, 3903815), (35, 2342289), (41, 1999515), (105, 780763), (123, 666505), (137, 598395), (139, 589785), (205, 399903), (287, 285645), (411, 199465), (417, 196595), (615, 133301), (685, 119679), (695, 117957), (861, 95215), (959, 85485), (973, 84255), (1435, 57129), (2055, 39893), (2085, 39319), (2877, 28495), (2919, 28085), (4305, 19043), (4795, 17097), (4865, 16851), (5617, 14595), (5699, 14385)]

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