About the Number

20121489

20121488 ← → 20121490

2進数表記:1001100110000011110010001

漢数字表記:二千十二万千四百八十九

素因数分解:

3 2 × 17 1 × 347 1 × 379 1

素因数の和:749
約数の個数: 24
約数和(自身を含む): 30944160
約数和(自身を除く): 10822671

約数列:
[1, 3, 9, 17, 51, 153, 347, 379, 1041, 1137, 3123, 3411, 5899, 6443, 17697, 19329, 53091, 57987, 131513, 394539, 1183617, 2235721, 6707163, 20121489]

約数ペア:
[(1, 20121489), (3, 6707163), (9, 2235721), (17, 1183617), (51, 394539), (153, 131513), (347, 57987), (379, 53091), (1041, 19329), (1137, 17697), (3123, 6443), (3411, 5899)]

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