21621297

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{421}}^1$

素因数の和:513

約数の個数: 32

約数和(自身を含む): 32814720

約数和(自身を除く): 11193423

約数列:

[1, 3, 17, 19, 51, 53, 57, 159, 323, 421, 901, 969, 1007, 1263, 2703, 3021, 7157, 7999, 17119, 21471, 22313, 23997, 51357, 66939, 135983, 379321, 407949, 423947, 1137963, 1271841, 7207099, 21621297]

約数ペア:

[(1, 21621297), (3, 7207099), (17, 1271841), (19, 1137963), (51, 423947), (53, 407949), (57, 379321), (159, 135983), (323, 66939), (421, 51357), (901, 23997), (969, 22313), (1007, 21471), (1263, 17119), (2703, 7999), (3021, 7157)]