About the Number

211320921

211320920 ← → 211320922

2進数表記:1100100110001000000001011001

漢数字表記:二億千百三十二万九百二十一

素因数分解:

3 1 × 7 1 × 71 1 × 141731 1

素因数の和:141812
約数の個数: 16
約数和(自身を含む): 326550528
約数和(自身を除く): 115229607

約数列:
[1, 3, 7, 21, 71, 213, 497, 1491, 141731, 425193, 992117, 2976351, 10062901, 30188703, 70440307, 211320921]

約数ペア:
[(1, 211320921), (3, 70440307), (7, 30188703), (21, 10062901), (71, 2976351), (213, 992117), (497, 425193), (1491, 141731)]

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