19825729

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{263}}^1$

素因数の和:381

約数の個数: 24

約数和(自身を含む): 25280640

約数和(自身を除く): 5454911

約数列:

[1, 7, 11, 77, 89, 121, 263, 623, 847, 979, 1841, 2893, 6853, 10769, 20251, 23407, 31823, 75383, 163849, 222761, 257477, 1802339, 2832247, 19825729]

約数ペア:

[(1, 19825729), (7, 2832247), (11, 1802339), (77, 257477), (89, 222761), (121, 163849), (263, 75383), (623, 31823), (847, 23407), (979, 20251), (1841, 10769), (2893, 6853)]