21820030

素因数分解:

$2^1\times 5^1\times {\mathrm{1249}}^1\times {\mathrm{1747}}^1$

素因数の和:3003

約数の個数: 16

約数和(自身を含む): 39330000

約数和(自身を除く): 17509970

約数列:

[1, 2, 5, 10, 1249, 1747, 2498, 3494, 6245, 8735, 12490, 17470, 2182003, 4364006, 10910015, 21820030]

約数ペア:

[(1, 21820030), (2, 10910015), (5, 4364006), (10, 2182003), (1249, 17470), (1747, 12490), (2498, 8735), (3494, 6245)]