18961072

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{91159}}^1$

素因数の和:91180

約数の個数: 20

約数和(自身を含む): 39563440

約数和(自身を除く): 20602368

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 91159, 182318, 364636, 729272, 1185067, 1458544, 2370134, 4740268, 9480536, 18961072]

約数ペア:

[(1, 18961072), (2, 9480536), (4, 4740268), (8, 2370134), (13, 1458544), (16, 1185067), (26, 729272), (52, 364636), (104, 182318), (208, 91159)]