644963540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{12853}}^1$

素因数の和:13068

約数の個数: 48

約数和(自身を含む): 1466281488

約数和(自身を除く): 821317948

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 193, 260, 386, 772, 965, 1930, 2509, 3860, 5018, 10036, 12545, 12853, 25090, 25706, 50180, 51412, 64265, 128530, 167089, 257060, 334178, 668356, 835445, 1670890, 2480629, 3341780, 4961258, 9922516, 12403145, 24806290, 32248177, 49612580, 64496354, 128992708, 161240885, 322481770, 644963540]

約数ペア:

[(1, 644963540), (2, 322481770), (4, 161240885), (5, 128992708), (10, 64496354), (13, 49612580), (20, 32248177), (26, 24806290), (52, 12403145), (65, 9922516), (130, 4961258), (193, 3341780), (260, 2480629), (386, 1670890), (772, 835445), (965, 668356), (1930, 334178), (2509, 257060), (3860, 167089), (5018, 128530), (10036, 64265), (12545, 51412), (12853, 50180), (25090, 25706)]