18875860

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^2\times {\mathrm{137}}^1$

素因数の和:312

約数の個数: 36

約数和(自身を含む): 40415508

約数和(自身を除く): 21539648

約数列:

[1, 2, 4, 5, 10, 20, 83, 137, 166, 274, 332, 415, 548, 685, 830, 1370, 1660, 2740, 6889, 11371, 13778, 22742, 27556, 34445, 45484, 56855, 68890, 113710, 137780, 227420, 943793, 1887586, 3775172, 4718965, 9437930, 18875860]

約数ペア:

[(1, 18875860), (2, 9437930), (4, 4718965), (5, 3775172), (10, 1887586), (20, 943793), (83, 227420), (137, 137780), (166, 113710), (274, 68890), (332, 56855), (415, 45484), (548, 34445), (685, 27556), (830, 22742), (1370, 13778), (1660, 11371), (2740, 6889)]