19986981

素因数分解:

$3^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{11467}}^1$

素因数の和:11560

約数の個数: 16

約数和(自身を含む): 30825984

約数和(自身を除く): 10839003

約数列:

[1, 3, 7, 21, 83, 249, 581, 1743, 11467, 34401, 80269, 240807, 951761, 2855283, 6662327, 19986981]

約数ペア:

[(1, 19986981), (3, 6662327), (7, 2855283), (21, 951761), (83, 240807), (249, 80269), (581, 34401), (1743, 11467)]