28724913

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{12323}}^1$

素因数の和:12373

約数の個数: 24

約数和(自身を含む): 48704448

約数和(自身を除く): 19979535

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 12323, 36969, 86261, 110907, 258783, 455951, 776349, 1367853, 3191657, 4103559, 9574971, 28724913]

約数ペア:

[(1, 28724913), (3, 9574971), (7, 4103559), (9, 3191657), (21, 1367853), (37, 776349), (63, 455951), (111, 258783), (259, 110907), (333, 86261), (777, 36969), (2331, 12323)]