21487695

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{1051}}^1$

素因数の和:1135

約数の個数: 32

約数和(自身を含む): 36357120

約数和(自身を除く): 14869425

約数列:

[1, 3, 5, 15, 29, 47, 87, 141, 145, 235, 435, 705, 1051, 1363, 3153, 4089, 5255, 6815, 15765, 20445, 30479, 49397, 91437, 148191, 152395, 246985, 457185, 740955, 1432513, 4297539, 7162565, 21487695]

約数ペア:

[(1, 21487695), (3, 7162565), (5, 4297539), (15, 1432513), (29, 740955), (47, 457185), (87, 246985), (141, 152395), (145, 148191), (235, 91437), (435, 49397), (705, 30479), (1051, 20445), (1363, 15765), (3153, 6815), (4089, 5255)]