19994450

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{8161}}^1$

素因数の和:8187

約数の個数: 36

約数和(自身を含む): 43266762

約数和(自身を除く): 23272312

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 70, 98, 175, 245, 350, 490, 1225, 2450, 8161, 16322, 40805, 57127, 81610, 114254, 204025, 285635, 399889, 408050, 571270, 799778, 1428175, 1999445, 2856350, 3998890, 9997225, 19994450]

約数ペア:

[(1, 19994450), (2, 9997225), (5, 3998890), (7, 2856350), (10, 1999445), (14, 1428175), (25, 799778), (35, 571270), (49, 408050), (50, 399889), (70, 285635), (98, 204025), (175, 114254), (245, 81610), (350, 57127), (490, 40805), (1225, 16322), (2450, 8161)]