About the Number

12909820

12909819 ← → 12909821

2進数表記:110001001111110011111100

漢数字表記:千二百九十万九千八百二十

素因数分解:

2 2 × 5 1 × 7 1 × 11 1 × 83 1 × 101 1

素因数の和:211
約数の個数: 96
約数和(自身を含む): 34546176
約数和(自身を除く): 21636356

約数列:
[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 83, 101, 110, 140, 154, 166, 202, 220, 308, 332, 385, 404, 415, 505, 581, 707, 770, 830, 913, 1010, 1111, 1162, 1414, 1540, 1660, 1826, 2020, 2222, 2324, 2828, 2905, 3535, 3652, 4444, 4565, 5555, 5810, 6391, 7070, 7777, 8383, 9130, 11110, 11620, 12782, 14140, 15554, 16766, 18260, 22220, 25564, 31108, 31955, 33532, 38885, 41915, 58681, 63910, 77770, 83830, 92213, 117362, 127820, 155540, 167660, 184426, 234724, 293405, 368852, 461065, 586810, 645491, 922130, 1173620, 1290982, 1844260, 2581964, 3227455, 6454910, 12909820]

約数ペア:
[(1, 12909820), (2, 6454910), (4, 3227455), (5, 2581964), (7, 1844260), (10, 1290982), (11, 1173620), (14, 922130), (20, 645491), (22, 586810), (28, 461065), (35, 368852), (44, 293405), (55, 234724), (70, 184426), (77, 167660), (83, 155540), (101, 127820), (110, 117362), (140, 92213), (154, 83830), (166, 77770), (202, 63910), (220, 58681), (308, 41915), (332, 38885), (385, 33532), (404, 31955), (415, 31108), (505, 25564), (581, 22220), (707, 18260), (770, 16766), (830, 15554), (913, 14140), (1010, 12782), (1111, 11620), (1162, 11110), (1414, 9130), (1540, 8383), (1660, 7777), (1826, 7070), (2020, 6391), (2222, 5810), (2324, 5555), (2828, 4565), (2905, 4444), (3535, 3652)]

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