21570206

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{977}}^1$

素因数の和:1088

約数の個数: 32

約数和(自身を含む): 39432960

約数和(自身を除く): 17862754

約数列:

[1, 2, 7, 14, 19, 38, 83, 133, 166, 266, 581, 977, 1162, 1577, 1954, 3154, 6839, 11039, 13678, 18563, 22078, 37126, 81091, 129941, 162182, 259882, 567637, 1135274, 1540729, 3081458, 10785103, 21570206]

約数ペア:

[(1, 21570206), (2, 10785103), (7, 3081458), (14, 1540729), (19, 1135274), (38, 567637), (83, 259882), (133, 162182), (166, 129941), (266, 81091), (581, 37126), (977, 22078), (1162, 18563), (1577, 13678), (1954, 11039), (3154, 6839)]