19868156

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{257}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 43690752

約数和(自身を除く): 23822596

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 251, 257, 308, 502, 514, 1004, 1028, 1757, 1799, 2761, 2827, 3514, 3598, 5522, 5654, 7028, 7196, 11044, 11308, 19327, 19789, 38654, 39578, 64507, 77308, 79156, 129014, 258028, 451549, 709577, 903098, 1419154, 1806196, 2838308, 4967039, 9934078, 19868156]

約数ペア:

[(1, 19868156), (2, 9934078), (4, 4967039), (7, 2838308), (11, 1806196), (14, 1419154), (22, 903098), (28, 709577), (44, 451549), (77, 258028), (154, 129014), (251, 79156), (257, 77308), (308, 64507), (502, 39578), (514, 38654), (1004, 19789), (1028, 19327), (1757, 11308), (1799, 11044), (2761, 7196), (2827, 7028), (3514, 5654), (3598, 5522)]