19992973

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19973}}^1$

素因数の和:20004

約数の個数: 16

約数和(自身を含む): 26845056

約数和(自身を除く): 6852083

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 19973, 139811, 219703, 259649, 1537921, 1817543, 2856139, 19992973]

約数ペア:

[(1, 19992973), (7, 2856139), (11, 1817543), (13, 1537921), (77, 259649), (91, 219703), (143, 139811), (1001, 19973)]