19665506

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{389}}^1$

素因数の和:578

約数の個数: 32

約数和(自身を含む): 35493120

約数和(自身を除く): 15827614

約数列:

[1, 2, 7, 14, 23, 46, 157, 161, 314, 322, 389, 778, 1099, 2198, 2723, 3611, 5446, 7222, 8947, 17894, 25277, 50554, 61073, 62629, 122146, 125258, 427511, 855022, 1404679, 2809358, 9832753, 19665506]

約数ペア:

[(1, 19665506), (2, 9832753), (7, 2809358), (14, 1404679), (23, 855022), (46, 427511), (157, 125258), (161, 122146), (314, 62629), (322, 61073), (389, 50554), (778, 25277), (1099, 17894), (2198, 8947), (2723, 7222), (3611, 5446)]