19439615

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 26429760

約数和(自身を除く): 6990145

約数列:

[1, 5, 13, 37, 59, 65, 137, 185, 295, 481, 685, 767, 1781, 2183, 2405, 3835, 5069, 8083, 8905, 10915, 25345, 28379, 40415, 65897, 105079, 141895, 299071, 329485, 525395, 1495355, 3887923, 19439615]

約数ペア:

[(1, 19439615), (5, 3887923), (13, 1495355), (37, 525395), (59, 329485), (65, 299071), (137, 141895), (185, 105079), (295, 65897), (481, 40415), (685, 28379), (767, 25345), (1781, 10915), (2183, 8905), (2405, 8083), (3835, 5069)]