1815202221

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{239441}}^1$

素因数の和:239489

約数の個数: 24

約数和(自身を含む): 2919276864

約数和(自身を除く): 1104074643

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 7581, 239441, 718323, 1676087, 4549379, 5028261, 13648137, 31845653, 86438201, 95536959, 259314603, 605067407, 1815202221]

約数ペア:

[(1, 1815202221), (3, 605067407), (7, 259314603), (19, 95536959), (21, 86438201), (57, 31845653), (133, 13648137), (361, 5028261), (399, 4549379), (1083, 1676087), (2527, 718323), (7581, 239441)]