19946888

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{269}}^1$

素因数の和:342

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 23598712

約数列:

[1, 2, 4, 8, 13, 23, 26, 31, 46, 52, 62, 92, 104, 124, 184, 248, 269, 299, 403, 538, 598, 713, 806, 1076, 1196, 1426, 1612, 2152, 2392, 2852, 3224, 3497, 5704, 6187, 6994, 8339, 9269, 12374, 13988, 16678, 18538, 24748, 27976, 33356, 37076, 49496, 66712, 74152, 80431, 108407, 160862, 191797, 216814, 321724, 383594, 433628, 643448, 767188, 867256, 1534376, 2493361, 4986722, 9973444, 19946888]

約数ペア:

[(1, 19946888), (2, 9973444), (4, 4986722), (8, 2493361), (13, 1534376), (23, 867256), (26, 767188), (31, 643448), (46, 433628), (52, 383594), (62, 321724), (92, 216814), (104, 191797), (124, 160862), (184, 108407), (248, 80431), (269, 74152), (299, 66712), (403, 49496), (538, 37076), (598, 33356), (713, 27976), (806, 24748), (1076, 18538), (1196, 16678), (1426, 13988), (1612, 12374), (2152, 9269), (2392, 8339), (2852, 6994), (3224, 6187), (3497, 5704)]