21405153

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4877}}^1$

素因数の和:4917

約数の個数: 32

約数和(自身を含む): 37463040

約数和(自身を除く): 16057887

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 77, 133, 209, 231, 399, 627, 1463, 4389, 4877, 14631, 34139, 53647, 92663, 102417, 160941, 277989, 375529, 648641, 1019293, 1126587, 1945923, 3057879, 7135051, 21405153]

約数ペア:

[(1, 21405153), (3, 7135051), (7, 3057879), (11, 1945923), (19, 1126587), (21, 1019293), (33, 648641), (57, 375529), (77, 277989), (133, 160941), (209, 102417), (231, 92663), (399, 53647), (627, 34139), (1463, 14631), (4389, 4877)]