1290990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1871}}^1$

素因数の和:1904

約数の個数: 32

約数和(自身を含む): 3234816

約数和(自身を除く): 1943826

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690, 1871, 3742, 5613, 9355, 11226, 18710, 28065, 43033, 56130, 86066, 129099, 215165, 258198, 430330, 645495, 1290990]

約数ペア:

[(1, 1290990), (2, 645495), (3, 430330), (5, 258198), (6, 215165), (10, 129099), (15, 86066), (23, 56130), (30, 43033), (46, 28065), (69, 18710), (115, 11226), (138, 9355), (230, 5613), (345, 3742), (690, 1871)]