28978803

素因数分解:

$3^4\times 7^1\times {\mathrm{51109}}^1$

素因数の和:51128

約数の個数: 20

約数和(自身を含む): 49474480

約数和(自身を除く): 20495677

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 51109, 153327, 357763, 459981, 1073289, 1379943, 3219867, 4139829, 9659601, 28978803]

約数ペア:

[(1, 28978803), (3, 9659601), (7, 4139829), (9, 3219867), (21, 1379943), (27, 1073289), (63, 459981), (81, 357763), (189, 153327), (567, 51109)]