19895876

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4969}}^1$

素因数の和:5004

約数の個数: 48

約数和(自身を含む): 46757760

約数和(自身を除く): 26861884

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 4969, 9938, 19876, 34783, 54659, 64597, 69566, 109318, 129194, 139132, 218636, 258388, 382613, 452179, 710567, 765226, 904358, 1421134, 1530452, 1808716, 2842268, 4973969, 9947938, 19895876]

約数ペア:

[(1, 19895876), (2, 9947938), (4, 4973969), (7, 2842268), (11, 1808716), (13, 1530452), (14, 1421134), (22, 904358), (26, 765226), (28, 710567), (44, 452179), (52, 382613), (77, 258388), (91, 218636), (143, 139132), (154, 129194), (182, 109318), (286, 69566), (308, 64597), (364, 54659), (572, 34783), (1001, 19876), (2002, 9938), (4004, 4969)]