20091519

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1571}}^1$

素因数の和:1620

約数の個数: 36

約数和(自身を含む): 34945560

約数和(自身を除く): 14854041

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 441, 609, 1421, 1571, 1827, 4263, 4713, 10997, 12789, 14139, 32991, 45559, 76979, 98973, 136677, 230937, 318913, 410031, 692811, 956739, 2232391, 2870217, 6697173, 20091519]

約数ペア:

[(1, 20091519), (3, 6697173), (7, 2870217), (9, 2232391), (21, 956739), (29, 692811), (49, 410031), (63, 318913), (87, 230937), (147, 136677), (203, 98973), (261, 76979), (441, 45559), (609, 32991), (1421, 14139), (1571, 12789), (1827, 10997), (4263, 4713)]