19800212

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{769}}^1$

素因数の和:971

約数の個数: 24

約数和(自身を含む): 35768040

約数和(自身を除く): 15967828

約数列:

[1, 2, 4, 41, 82, 157, 164, 314, 628, 769, 1538, 3076, 6437, 12874, 25748, 31529, 63058, 120733, 126116, 241466, 482932, 4950053, 9900106, 19800212]

約数ペア:

[(1, 19800212), (2, 9900106), (4, 4950053), (41, 482932), (82, 241466), (157, 126116), (164, 120733), (314, 63058), (628, 31529), (769, 25748), (1538, 12874), (3076, 6437)]