19940918

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:500

約数の個数: 24

約数和(自身を含む): 32095440

約数和(自身を除く): 12154522

約数列:

[1, 2, 19, 38, 71, 142, 361, 389, 722, 778, 1349, 2698, 7391, 14782, 25631, 27619, 51262, 55238, 140429, 280858, 524761, 1049522, 9970459, 19940918]

約数ペア:

[(1, 19940918), (2, 9970459), (19, 1049522), (38, 524761), (71, 280858), (142, 140429), (361, 55238), (389, 51262), (722, 27619), (778, 25631), (1349, 14782), (2698, 7391)]