20790243

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{421}}^1$

素因数の和:520

約数の個数: 32

約数和(自身を含む): 32409600

約数和(自身を除く): 11619357

約数列:

[1, 3, 9, 27, 31, 59, 93, 177, 279, 421, 531, 837, 1263, 1593, 1829, 3789, 5487, 11367, 13051, 16461, 24839, 39153, 49383, 74517, 117459, 223551, 352377, 670653, 770009, 2310027, 6930081, 20790243]

約数ペア:

[(1, 20790243), (3, 6930081), (9, 2310027), (27, 770009), (31, 670653), (59, 352377), (93, 223551), (177, 117459), (279, 74517), (421, 49383), (531, 39153), (837, 24839), (1263, 16461), (1593, 13051), (1829, 11367), (3789, 5487)]