About the Number

100020105

100020104 ← → 100020106

2進数表記:101111101100010111110001001

漢数字表記:一億二万百五

素因数分解:

3 2 × 5 1 × 31 1 × 71699 1

素因数の和:71741
約数の個数: 24
約数和(自身を含む): 178963200
約数和(自身を除く): 78943095

約数列:
[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 71699, 215097, 358495, 645291, 1075485, 2222669, 3226455, 6668007, 11113345, 20004021, 33340035, 100020105]

約数ペア:
[(1, 100020105), (3, 33340035), (5, 20004021), (9, 11113345), (15, 6668007), (31, 3226455), (45, 2222669), (93, 1075485), (155, 645291), (279, 358495), (465, 215097), (1395, 71699)]

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