18663892

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{491}}^1$

素因数の和:568

約数の個数: 48

約数和(自身を含む): 38187072

約数和(自身を除く): 19523180

約数列:

[1, 2, 4, 13, 17, 26, 34, 43, 52, 68, 86, 172, 221, 442, 491, 559, 731, 884, 982, 1118, 1462, 1964, 2236, 2924, 6383, 8347, 9503, 12766, 16694, 19006, 21113, 25532, 33388, 38012, 42226, 84452, 108511, 217022, 274469, 358921, 434044, 548938, 717842, 1097876, 1435684, 4665973, 9331946, 18663892]

約数ペア:

[(1, 18663892), (2, 9331946), (4, 4665973), (13, 1435684), (17, 1097876), (26, 717842), (34, 548938), (43, 434044), (52, 358921), (68, 274469), (86, 217022), (172, 108511), (221, 84452), (442, 42226), (491, 38012), (559, 33388), (731, 25532), (884, 21113), (982, 19006), (1118, 16694), (1462, 12766), (1964, 9503), (2236, 8347), (2924, 6383)]