21375796

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{103}}^1\times {\mathrm{307}}^1$

素因数の和:440

約数の個数: 36

約数和(自身を含む): 41032992

約数和(自身を除く): 19657196

約数列:

[1, 2, 4, 13, 26, 52, 103, 169, 206, 307, 338, 412, 614, 676, 1228, 1339, 2678, 3991, 5356, 7982, 15964, 17407, 31621, 34814, 51883, 63242, 69628, 103766, 126484, 207532, 411073, 822146, 1644292, 5343949, 10687898, 21375796]

約数ペア:

[(1, 21375796), (2, 10687898), (4, 5343949), (13, 1644292), (26, 822146), (52, 411073), (103, 207532), (169, 126484), (206, 103766), (307, 69628), (338, 63242), (412, 51883), (614, 34814), (676, 31621), (1228, 17407), (1339, 15964), (2678, 7982), (3991, 5356)]