About the Number

129401285

129401284 ← → 129401286

2進数表記:111101101101000000111000101

漢数字表記:一億二千九百四十万千二百八十五

素因数分解:

5 1 × 13 1 × 31 1 × 149 1 × 431 1

素因数の和:629
約数の個数: 32
約数和(自身を含む): 174182400
約数和(自身を除く): 44781115

約数列:
[1, 5, 13, 31, 65, 149, 155, 403, 431, 745, 1937, 2015, 2155, 4619, 5603, 9685, 13361, 23095, 28015, 60047, 64219, 66805, 173693, 300235, 321095, 834847, 868465, 1990789, 4174235, 9953945, 25880257, 129401285]

約数ペア:
[(1, 129401285), (5, 25880257), (13, 9953945), (31, 4174235), (65, 1990789), (149, 868465), (155, 834847), (403, 321095), (431, 300235), (745, 173693), (1937, 66805), (2015, 64219), (2155, 60047), (4619, 28015), (5603, 23095), (9685, 13361)]

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