21908444

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{547}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 44190720

約数和(自身を除く): 22282276

約数列:

[1, 2, 4, 17, 19, 31, 34, 38, 62, 68, 76, 124, 323, 527, 547, 589, 646, 1054, 1094, 1178, 1292, 2108, 2188, 2356, 9299, 10013, 10393, 16957, 18598, 20026, 20786, 33914, 37196, 40052, 41572, 67828, 176681, 288269, 322183, 353362, 576538, 644366, 706724, 1153076, 1288732, 5477111, 10954222, 21908444]

約数ペア:

[(1, 21908444), (2, 10954222), (4, 5477111), (17, 1288732), (19, 1153076), (31, 706724), (34, 644366), (38, 576538), (62, 353362), (68, 322183), (76, 288269), (124, 176681), (323, 67828), (527, 41572), (547, 40052), (589, 37196), (646, 33914), (1054, 20786), (1094, 20026), (1178, 18598), (1292, 16957), (2108, 10393), (2188, 10013), (2356, 9299)]