19391020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4639}}^1$

素因数の和:4678

約数の個数: 48

約数和(自身を含む): 46771200

約数和(自身を除く): 27380180

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 4639, 9278, 18556, 23195, 46390, 51029, 88141, 92780, 102058, 176282, 204116, 255145, 352564, 440705, 510290, 881410, 969551, 1020580, 1762820, 1939102, 3878204, 4847755, 9695510, 19391020]

約数ペア:

[(1, 19391020), (2, 9695510), (4, 4847755), (5, 3878204), (10, 1939102), (11, 1762820), (19, 1020580), (20, 969551), (22, 881410), (38, 510290), (44, 440705), (55, 352564), (76, 255145), (95, 204116), (110, 176282), (190, 102058), (209, 92780), (220, 88141), (380, 51029), (418, 46390), (836, 23195), (1045, 18556), (2090, 9278), (4180, 4639)]