19904522

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{283}}^1$

素因数の和:458

約数の個数: 32

約数和(自身を含む): 34352640

約数和(自身を除く): 14448118

約数列:

[1, 2, 11, 22, 23, 46, 139, 253, 278, 283, 506, 566, 1529, 3058, 3113, 3197, 6226, 6394, 6509, 13018, 35167, 39337, 70334, 71599, 78674, 143198, 432707, 865414, 904751, 1809502, 9952261, 19904522]

約数ペア:

[(1, 19904522), (2, 9952261), (11, 1809502), (22, 904751), (23, 865414), (46, 432707), (139, 143198), (253, 78674), (278, 71599), (283, 70334), (506, 39337), (566, 35167), (1529, 13018), (3058, 6509), (3113, 6394), (3197, 6226)]