21487898

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:135

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 17910502

約数列:

[1, 2, 17, 19, 29, 31, 34, 37, 38, 58, 62, 74, 323, 493, 527, 551, 589, 629, 646, 703, 899, 986, 1054, 1073, 1102, 1147, 1178, 1258, 1406, 1798, 2146, 2294, 9367, 10013, 11951, 15283, 17081, 18241, 18734, 19499, 20026, 20387, 21793, 23902, 30566, 33263, 34162, 36482, 38998, 40774, 43586, 66526, 290377, 346579, 370481, 565471, 580754, 631997, 693158, 740962, 1130942, 1263994, 10743949, 21487898]

約数ペア:

[(1, 21487898), (2, 10743949), (17, 1263994), (19, 1130942), (29, 740962), (31, 693158), (34, 631997), (37, 580754), (38, 565471), (58, 370481), (62, 346579), (74, 290377), (323, 66526), (493, 43586), (527, 40774), (551, 38998), (589, 36482), (629, 34162), (646, 33263), (703, 30566), (899, 23902), (986, 21793), (1054, 20387), (1073, 20026), (1102, 19499), (1147, 18734), (1178, 18241), (1258, 17081), (1406, 15283), (1798, 11951), (2146, 10013), (2294, 9367)]