20331376

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:210

約数の個数: 60

約数和(自身を含む): 43659408

約数和(自身を除く): 23328032

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 73, 103, 104, 146, 169, 206, 208, 292, 338, 412, 584, 676, 824, 949, 1168, 1339, 1352, 1648, 1898, 2678, 2704, 3796, 5356, 7519, 7592, 10712, 12337, 15038, 15184, 17407, 21424, 24674, 30076, 34814, 49348, 60152, 69628, 97747, 98696, 120304, 139256, 195494, 197392, 278512, 390988, 781976, 1270711, 1563952, 2541422, 5082844, 10165688, 20331376]

約数ペア:

[(1, 20331376), (2, 10165688), (4, 5082844), (8, 2541422), (13, 1563952), (16, 1270711), (26, 781976), (52, 390988), (73, 278512), (103, 197392), (104, 195494), (146, 139256), (169, 120304), (206, 98696), (208, 97747), (292, 69628), (338, 60152), (412, 49348), (584, 34814), (676, 30076), (824, 24674), (949, 21424), (1168, 17407), (1339, 15184), (1352, 15038), (1648, 12337), (1898, 10712), (2678, 7592), (2704, 7519), (3796, 5356)]