21039888

素因数分解:

$2^4\times 3^1\times {\mathrm{41}}^1\times {\mathrm{10691}}^1$

素因数の和:10743

約数の個数: 40

約数和(自身を含む): 55683936

約数和(自身を除く): 34644048

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 41, 48, 82, 123, 164, 246, 328, 492, 656, 984, 1968, 10691, 21382, 32073, 42764, 64146, 85528, 128292, 171056, 256584, 438331, 513168, 876662, 1314993, 1753324, 2629986, 3506648, 5259972, 7013296, 10519944, 21039888]

約数ペア:

[(1, 21039888), (2, 10519944), (3, 7013296), (4, 5259972), (6, 3506648), (8, 2629986), (12, 1753324), (16, 1314993), (24, 876662), (41, 513168), (48, 438331), (82, 256584), (123, 171056), (164, 128292), (246, 85528), (328, 64146), (492, 42764), (656, 32073), (984, 21382), (1968, 10691)]