21917165

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{331}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 30119040

約数和(自身を除く): 8201875

約数列:

[1, 5, 17, 19, 41, 85, 95, 205, 323, 331, 697, 779, 1615, 1655, 3485, 3895, 5627, 6289, 13243, 13571, 28135, 31445, 66215, 67855, 106913, 230707, 257849, 534565, 1153535, 1289245, 4383433, 21917165]

約数ペア:

[(1, 21917165), (5, 4383433), (17, 1289245), (19, 1153535), (41, 534565), (85, 257849), (95, 230707), (205, 106913), (323, 67855), (331, 66215), (697, 31445), (779, 28135), (1615, 13571), (1655, 13243), (3485, 6289), (3895, 5627)]