1618461940

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{727}}^1\times {\mathrm{1409}}^1$

素因数の和:2224

約数の個数: 48

約数和(自身を含む): 3448972800

約数和(自身を除く): 1830510860

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 727, 790, 1409, 1454, 1580, 2818, 2908, 3635, 5636, 7045, 7270, 14090, 14540, 28180, 57433, 111311, 114866, 222622, 229732, 287165, 445244, 556555, 574330, 1024343, 1113110, 1148660, 2048686, 2226220, 4097372, 5121715, 10243430, 20486860, 80923097, 161846194, 323692388, 404615485, 809230970, 1618461940]

約数ペア:

[(1, 1618461940), (2, 809230970), (4, 404615485), (5, 323692388), (10, 161846194), (20, 80923097), (79, 20486860), (158, 10243430), (316, 5121715), (395, 4097372), (727, 2226220), (790, 2048686), (1409, 1148660), (1454, 1113110), (1580, 1024343), (2818, 574330), (2908, 556555), (3635, 445244), (5636, 287165), (7045, 229732), (7270, 222622), (14090, 114866), (14540, 111311), (28180, 57433)]