331427785

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{691}}^1$

素因数の和:913

約数の個数: 32

約数和(自身を含む): 440842752

約数和(自身を除く): 109414967

約数列:

[1, 5, 13, 47, 65, 157, 235, 611, 691, 785, 2041, 3055, 3455, 7379, 8983, 10205, 32477, 36895, 44915, 95927, 108487, 162385, 422201, 479635, 542435, 1410331, 2111005, 5098889, 7051655, 25494445, 66285557, 331427785]

約数ペア:

[(1, 331427785), (5, 66285557), (13, 25494445), (47, 7051655), (65, 5098889), (157, 2111005), (235, 1410331), (611, 542435), (691, 479635), (785, 422201), (2041, 162385), (3055, 108487), (3455, 95927), (7379, 44915), (8983, 36895), (10205, 32477)]