21378518

素因数分解:

$2^1\times 7^1\times {\mathrm{673}}^1\times {\mathrm{2269}}^1$

素因数の和:2951

約数の個数: 16

約数和(自身を含む): 36719520

約数和(自身を除く): 15341002

約数列:

[1, 2, 7, 14, 673, 1346, 2269, 4538, 4711, 9422, 15883, 31766, 1527037, 3054074, 10689259, 21378518]

約数ペア:

[(1, 21378518), (2, 10689259), (7, 3054074), (14, 1527037), (673, 31766), (1346, 15883), (2269, 9422), (4538, 4711)]