About the Number

12901020

12901019 ← → 12901021

2進数表記:110001001101101010011100

漢数字表記:千二百九十万千二十

素因数分解:

2 2 × 3 1 × 5 1 × 11 2 × 1777 1

素因数の和:1811
約数の個数: 72
約数和(自身を含む): 39727632
約数和(自身を除く): 26826612

約数列:
[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 121, 132, 165, 220, 242, 330, 363, 484, 605, 660, 726, 1210, 1452, 1777, 1815, 2420, 3554, 3630, 5331, 7108, 7260, 8885, 10662, 17770, 19547, 21324, 26655, 35540, 39094, 53310, 58641, 78188, 97735, 106620, 117282, 195470, 215017, 234564, 293205, 390940, 430034, 586410, 645051, 860068, 1075085, 1172820, 1290102, 2150170, 2580204, 3225255, 4300340, 6450510, 12901020]

約数ペア:
[(1, 12901020), (2, 6450510), (3, 4300340), (4, 3225255), (5, 2580204), (6, 2150170), (10, 1290102), (11, 1172820), (12, 1075085), (15, 860068), (20, 645051), (22, 586410), (30, 430034), (33, 390940), (44, 293205), (55, 234564), (60, 215017), (66, 195470), (110, 117282), (121, 106620), (132, 97735), (165, 78188), (220, 58641), (242, 53310), (330, 39094), (363, 35540), (484, 26655), (605, 21324), (660, 19547), (726, 17770), (1210, 10662), (1452, 8885), (1777, 7260), (1815, 7108), (2420, 5331), (3554, 3630)]

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