19725695

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^3\times {\mathrm{73}}^1$

素因数の和:140

約数の個数: 32

約数和(自身を含む): 27812160

約数和(自身を除く): 8086465

約数列:

[1, 5, 11, 17, 55, 73, 85, 187, 289, 365, 803, 935, 1241, 1445, 3179, 4015, 4913, 6205, 13651, 15895, 21097, 24565, 54043, 68255, 105485, 232067, 270215, 358649, 1160335, 1793245, 3945139, 19725695]

約数ペア:

[(1, 19725695), (5, 3945139), (11, 1793245), (17, 1160335), (55, 358649), (73, 270215), (85, 232067), (187, 105485), (289, 68255), (365, 54043), (803, 24565), (935, 21097), (1241, 15895), (1445, 13651), (3179, 6205), (4015, 4913)]