20985153608

素因数分解:

$2^3\times {\mathrm{83}}^1\times {\mathrm{2081}}^1\times {\mathrm{15187}}^1$

素因数の和:17357

約数の個数: 32

約数和(自身を含む): 39842984160

約数和(自身を除く): 18857830552

約数列:

[1, 2, 4, 8, 83, 166, 332, 664, 2081, 4162, 8324, 15187, 16648, 30374, 60748, 121496, 172723, 345446, 690892, 1260521, 1381784, 2521042, 5042084, 10084168, 31604147, 63208294, 126416588, 252833176, 2623144201, 5246288402, 10492576804, 20985153608]

約数ペア:

[(1, 20985153608), (2, 10492576804), (4, 5246288402), (8, 2623144201), (83, 252833176), (166, 126416588), (332, 63208294), (664, 31604147), (2081, 10084168), (4162, 5042084), (8324, 2521042), (15187, 1381784), (16648, 1260521), (30374, 690892), (60748, 345446), (121496, 172723)]