18990178

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1\times {\mathrm{457}}^1$

素因数の和:801

約数の個数: 16

約数和(自身を含む): 29018880

約数和(自身を除く): 10028702

約数列:

[1, 2, 79, 158, 263, 457, 526, 914, 20777, 36103, 41554, 72206, 120191, 240382, 9495089, 18990178]

約数ペア:

[(1, 18990178), (2, 9495089), (79, 240382), (158, 120191), (263, 72206), (457, 41554), (526, 36103), (914, 20777)]