20921963909

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{359}}^1\times {\mathrm{379}}^1\times {\mathrm{1997}}^1$

素因数の和:2753

約数の個数: 32

約数和(自身を含む): 26239334400

約数和(自身を除く): 5317370491

約数列:

[1, 7, 11, 77, 359, 379, 1997, 2513, 2653, 3949, 4169, 13979, 21967, 27643, 29183, 136061, 153769, 716923, 756863, 952427, 1496671, 5018461, 5298041, 7886153, 8325493, 10476697, 55203071, 58278451, 271713817, 1901996719, 2988851987, 20921963909]

約数ペア:

[(1, 20921963909), (7, 2988851987), (11, 1901996719), (77, 271713817), (359, 58278451), (379, 55203071), (1997, 10476697), (2513, 8325493), (2653, 7886153), (3949, 5298041), (4169, 5018461), (13979, 1496671), (21967, 952427), (27643, 756863), (29183, 716923), (136061, 153769)]