19998648

素因数分解:

$2^3\times 3^2\times {\mathrm{37}}^1\times {\mathrm{7507}}^1$

素因数の和:7556

約数の個数: 48

約数和(自身を含む): 55634280

約数和(自身を除く): 35635632

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 37, 72, 74, 111, 148, 222, 296, 333, 444, 666, 888, 1332, 2664, 7507, 15014, 22521, 30028, 45042, 60056, 67563, 90084, 135126, 180168, 270252, 277759, 540504, 555518, 833277, 1111036, 1666554, 2222072, 2499831, 3333108, 4999662, 6666216, 9999324, 19998648]

約数ペア:

[(1, 19998648), (2, 9999324), (3, 6666216), (4, 4999662), (6, 3333108), (8, 2499831), (9, 2222072), (12, 1666554), (18, 1111036), (24, 833277), (36, 555518), (37, 540504), (72, 277759), (74, 270252), (111, 180168), (148, 135126), (222, 90084), (296, 67563), (333, 60056), (444, 45042), (666, 30028), (888, 22521), (1332, 15014), (2664, 7507)]