19641255

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{293}}^1$

素因数の和:451

約数の個数: 32

約数和(自身を含む): 32598720

約数和(自身を除く): 12957465

約数列:

[1, 3, 5, 15, 41, 109, 123, 205, 293, 327, 545, 615, 879, 1465, 1635, 4395, 4469, 12013, 13407, 22345, 31937, 36039, 60065, 67035, 95811, 159685, 180195, 479055, 1309417, 3928251, 6547085, 19641255]

約数ペア:

[(1, 19641255), (3, 6547085), (5, 3928251), (15, 1309417), (41, 479055), (109, 180195), (123, 159685), (205, 95811), (293, 67035), (327, 60065), (545, 36039), (615, 31937), (879, 22345), (1465, 13407), (1635, 12013), (4395, 4469)]