20815030

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{34123}}^1$

素因数の和:34191

約数の個数: 16

約数和(自身を含む): 38082384

約数和(自身を除く): 17267354

約数列:

[1, 2, 5, 10, 61, 122, 305, 610, 34123, 68246, 170615, 341230, 2081503, 4163006, 10407515, 20815030]

約数ペア:

[(1, 20815030), (2, 10407515), (5, 4163006), (10, 2081503), (61, 341230), (122, 170615), (305, 68246), (610, 34123)]