12978345

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{449}}^1$

素因数の和:545

約数の個数: 32

約数和(自身を含む): 21772800

約数和(自身を除く): 8794455

約数列:

[1, 3, 5, 15, 41, 47, 123, 141, 205, 235, 449, 615, 705, 1347, 1927, 2245, 5781, 6735, 9635, 18409, 21103, 28905, 55227, 63309, 92045, 105515, 276135, 316545, 865223, 2595669, 4326115, 12978345]

約数ペア:

[(1, 12978345), (3, 4326115), (5, 2595669), (15, 865223), (41, 316545), (47, 276135), (123, 105515), (141, 92045), (205, 63309), (235, 55227), (449, 28905), (615, 21103), (705, 18409), (1347, 9635), (1927, 6735), (2245, 5781)]