About the Number

1288996890

1288996889 ← → 1288996891

2進数表記:1001100110101001000100000011010

漢数字表記:十二億八千八百九十九万六千八百九十

素因数分解:

2 1 × 3 1 × 5 1 × 211 1 × 269 1 × 757 1

素因数の和:1247
約数の個数: 64
約数和(自身を含む): 3123930240
約数和(自身を除く): 1834933350

約数列:
[1, 2, 3, 5, 6, 10, 15, 30, 211, 269, 422, 538, 633, 757, 807, 1055, 1266, 1345, 1514, 1614, 2110, 2271, 2690, 3165, 3785, 4035, 4542, 6330, 7570, 8070, 11355, 22710, 56759, 113518, 159727, 170277, 203633, 283795, 319454, 340554, 407266, 479181, 567590, 610899, 798635, 851385, 958362, 1018165, 1221798, 1597270, 1702770, 2036330, 2395905, 3054495, 4791810, 6108990, 42966563, 85933126, 128899689, 214832815, 257799378, 429665630, 644498445, 1288996890]

約数ペア:
[(1, 1288996890), (2, 644498445), (3, 429665630), (5, 257799378), (6, 214832815), (10, 128899689), (15, 85933126), (30, 42966563), (211, 6108990), (269, 4791810), (422, 3054495), (538, 2395905), (633, 2036330), (757, 1702770), (807, 1597270), (1055, 1221798), (1266, 1018165), (1345, 958362), (1514, 851385), (1614, 798635), (2110, 610899), (2271, 567590), (2690, 479181), (3165, 407266), (3785, 340554), (4035, 319454), (4542, 283795), (6330, 203633), (7570, 170277), (8070, 159727), (11355, 113518), (22710, 56759)]

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