19887595

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{401}}^1$

素因数の和:535

約数の個数: 32

約数和(自身を含む): 29715840

約数和(自身を除く): 9828245

約数列:

[1, 5, 7, 13, 35, 65, 91, 109, 401, 455, 545, 763, 1417, 2005, 2807, 3815, 5213, 7085, 9919, 14035, 26065, 36491, 43709, 49595, 182455, 218545, 305963, 568217, 1529815, 2841085, 3977519, 19887595]

約数ペア:

[(1, 19887595), (5, 3977519), (7, 2841085), (13, 1529815), (35, 568217), (65, 305963), (91, 218545), (109, 182455), (401, 49595), (455, 43709), (545, 36491), (763, 26065), (1417, 14035), (2005, 9919), (2807, 7085), (3815, 5213)]