About the Number

207908490

207908489 ← → 207908491

2進数表記:1100011001000110111010001010

漢数字表記:二億七百九十万八千四百九十

素因数分解:

2 1 × 3 1 × 5 1 × 107 1 × 239 1 × 271 1

素因数の和:627
約数の個数: 64
約数和(自身を含む): 507617280
約数和(自身を除く): 299708790

約数列:
[1, 2, 3, 5, 6, 10, 15, 30, 107, 214, 239, 271, 321, 478, 535, 542, 642, 717, 813, 1070, 1195, 1355, 1434, 1605, 1626, 2390, 2710, 3210, 3585, 4065, 7170, 8130, 25573, 28997, 51146, 57994, 64769, 76719, 86991, 127865, 129538, 144985, 153438, 173982, 194307, 255730, 289970, 323845, 383595, 388614, 434955, 647690, 767190, 869910, 971535, 1943070, 6930283, 13860566, 20790849, 34651415, 41581698, 69302830, 103954245, 207908490]

約数ペア:
[(1, 207908490), (2, 103954245), (3, 69302830), (5, 41581698), (6, 34651415), (10, 20790849), (15, 13860566), (30, 6930283), (107, 1943070), (214, 971535), (239, 869910), (271, 767190), (321, 647690), (478, 434955), (535, 388614), (542, 383595), (642, 323845), (717, 289970), (813, 255730), (1070, 194307), (1195, 173982), (1355, 153438), (1434, 144985), (1605, 129538), (1626, 127865), (2390, 86991), (2710, 76719), (3210, 64769), (3585, 57994), (4065, 51146), (7170, 28997), (8130, 25573)]

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