21439904

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{197}}^1$

素因数の和:405

約数の個数: 48

約数和(自身を含む): 44906400

約数和(自身を除く): 23466496

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 179, 197, 304, 358, 394, 608, 716, 788, 1432, 1576, 2864, 3152, 3401, 3743, 5728, 6304, 6802, 7486, 13604, 14972, 27208, 29944, 35263, 54416, 59888, 70526, 108832, 119776, 141052, 282104, 564208, 669997, 1128416, 1339994, 2679988, 5359976, 10719952, 21439904]

約数ペア:

[(1, 21439904), (2, 10719952), (4, 5359976), (8, 2679988), (16, 1339994), (19, 1128416), (32, 669997), (38, 564208), (76, 282104), (152, 141052), (179, 119776), (197, 108832), (304, 70526), (358, 59888), (394, 54416), (608, 35263), (716, 29944), (788, 27208), (1432, 14972), (1576, 13604), (2864, 7486), (3152, 6802), (3401, 6304), (3743, 5728)]