25980020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{269}}^1\times {\mathrm{439}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 59875200

約数和(自身を除く): 33895180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 269, 439, 538, 878, 1076, 1345, 1756, 2195, 2690, 2959, 4390, 4829, 5380, 5918, 8780, 9658, 11836, 14795, 19316, 24145, 29590, 48290, 59180, 96580, 118091, 236182, 472364, 590455, 1180910, 1299001, 2361820, 2598002, 5196004, 6495005, 12990010, 25980020]

約数ペア:

[(1, 25980020), (2, 12990010), (4, 6495005), (5, 5196004), (10, 2598002), (11, 2361820), (20, 1299001), (22, 1180910), (44, 590455), (55, 472364), (110, 236182), (220, 118091), (269, 96580), (439, 59180), (538, 48290), (878, 29590), (1076, 24145), (1345, 19316), (1756, 14795), (2195, 11836), (2690, 9658), (2959, 8780), (4390, 5918), (4829, 5380)]