21038478

素因数分解:

$2^1\times 3^1\times {\mathrm{503}}^1\times {\mathrm{6971}}^1$

素因数の和:7479

約数の個数: 16

約数和(自身を含む): 42166656

約数和(自身を除く): 21128178

約数列:

[1, 2, 3, 6, 503, 1006, 1509, 3018, 6971, 13942, 20913, 41826, 3506413, 7012826, 10519239, 21038478]

約数ペア:

[(1, 21038478), (2, 10519239), (3, 7012826), (6, 3506413), (503, 41826), (1006, 20913), (1509, 13942), (3018, 6971)]