215549509

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^2$

素因数の和:397

約数の個数: 24

約数和(自身を含む): 264635840

約数和(自身を除く): 49086331

約数列:

[1, 7, 19, 73, 133, 149, 511, 1043, 1387, 2831, 9709, 10877, 19817, 22201, 76139, 155407, 206663, 421819, 1446641, 1620673, 2952733, 11344711, 30792787, 215549509]

約数ペア:

[(1, 215549509), (7, 30792787), (19, 11344711), (73, 2952733), (133, 1620673), (149, 1446641), (511, 421819), (1043, 206663), (1387, 155407), (2831, 76139), (9709, 22201), (10877, 19817)]