28177779

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{70621}}^1$

素因数の和:70650

約数の個数: 16

約数和(自身を含む): 45198080

約数和(自身を除く): 17020301

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 70621, 211863, 494347, 1341799, 1483041, 4025397, 9392593, 28177779]

約数ペア:

[(1, 28177779), (3, 9392593), (7, 4025397), (19, 1483041), (21, 1341799), (57, 494347), (133, 211863), (399, 70621)]