640658512

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{42193}}^1$

素因数の和:42287

約数の個数: 40

約数和(自身を含む): 1355102504

約数和(自身を除く): 714443992

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 73, 104, 146, 208, 292, 584, 949, 1168, 1898, 3796, 7592, 15184, 42193, 84386, 168772, 337544, 548509, 675088, 1097018, 2194036, 3080089, 4388072, 6160178, 8776144, 12320356, 24640712, 40041157, 49281424, 80082314, 160164628, 320329256, 640658512]

約数ペア:

[(1, 640658512), (2, 320329256), (4, 160164628), (8, 80082314), (13, 49281424), (16, 40041157), (26, 24640712), (52, 12320356), (73, 8776144), (104, 6160178), (146, 4388072), (208, 3080089), (292, 2194036), (584, 1097018), (949, 675088), (1168, 548509), (1898, 337544), (3796, 168772), (7592, 84386), (15184, 42193)]