21377565

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2273}}^1$

素因数の和:2314

約数の個数: 48

約数和(自身を含む): 42569280

約数和(自身を除く): 21191715

約数列:

[1, 3, 5, 9, 11, 15, 19, 33, 45, 55, 57, 95, 99, 165, 171, 209, 285, 495, 627, 855, 1045, 1881, 2273, 3135, 6819, 9405, 11365, 20457, 25003, 34095, 43187, 75009, 102285, 125015, 129561, 215935, 225027, 375045, 388683, 475057, 647805, 1125135, 1425171, 1943415, 2375285, 4275513, 7125855, 21377565]

約数ペア:

[(1, 21377565), (3, 7125855), (5, 4275513), (9, 2375285), (11, 1943415), (15, 1425171), (19, 1125135), (33, 647805), (45, 475057), (55, 388683), (57, 375045), (95, 225027), (99, 215935), (165, 129561), (171, 125015), (209, 102285), (285, 75009), (495, 43187), (627, 34095), (855, 25003), (1045, 20457), (1881, 11365), (2273, 9405), (3135, 6819)]