21005362

素因数分解:

$2^1\times 7^1\times {\mathrm{1009}}^1\times {\mathrm{1487}}^1$

素因数の和:2505

約数の個数: 16

約数和(自身を含む): 36069120

約数和(自身を除く): 15063758

約数列:

[1, 2, 7, 14, 1009, 1487, 2018, 2974, 7063, 10409, 14126, 20818, 1500383, 3000766, 10502681, 21005362]

約数ペア:

[(1, 21005362), (2, 10502681), (7, 3000766), (14, 1500383), (1009, 20818), (1487, 14126), (2018, 10409), (2974, 7063)]