About the Number

1388490

1388489 ← → 1388491

2進数表記:101010010111111001010

漢数字表記:百三十八万八千四百九十

素因数分解:

2 1 × 3 1 × 5 1 × 31 1 × 1493 1

素因数の和:1534
約数の個数: 32
約数和(自身を含む): 3442176
約数和(自身を除く): 2053686

約数列:
[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 93, 155, 186, 310, 465, 930, 1493, 2986, 4479, 7465, 8958, 14930, 22395, 44790, 46283, 92566, 138849, 231415, 277698, 462830, 694245, 1388490]

約数ペア:
[(1, 1388490), (2, 694245), (3, 462830), (5, 277698), (6, 231415), (10, 138849), (15, 92566), (30, 46283), (31, 44790), (62, 22395), (93, 14930), (155, 8958), (186, 7465), (310, 4479), (465, 2986), (930, 1493)]

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