28978971

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1231}}^1$

素因数の和:1319

約数の個数: 32

約数和(自身を含む): 47308800

約数和(自身を除く): 18329829

約数列:

[1, 3, 7, 19, 21, 57, 59, 133, 177, 399, 413, 1121, 1231, 1239, 3363, 3693, 7847, 8617, 23389, 23541, 25851, 70167, 72629, 163723, 217887, 491169, 508403, 1379951, 1525209, 4139853, 9659657, 28978971]

約数ペア:

[(1, 28978971), (3, 9659657), (7, 4139853), (19, 1525209), (21, 1379951), (57, 508403), (59, 491169), (133, 217887), (177, 163723), (399, 72629), (413, 70167), (1121, 25851), (1231, 23541), (1239, 23389), (3363, 8617), (3693, 7847)]