28702020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{383}}^1\times {\mathrm{1249}}^1$

素因数の和:1644

約数の個数: 48

約数和(自身を含む): 80640000

約数和(自身を除く): 51937980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 383, 766, 1149, 1249, 1532, 1915, 2298, 2498, 3747, 3830, 4596, 4996, 5745, 6245, 7494, 7660, 11490, 12490, 14988, 18735, 22980, 24980, 37470, 74940, 478367, 956734, 1435101, 1913468, 2391835, 2870202, 4783670, 5740404, 7175505, 9567340, 14351010, 28702020]

約数ペア:

[(1, 28702020), (2, 14351010), (3, 9567340), (4, 7175505), (5, 5740404), (6, 4783670), (10, 2870202), (12, 2391835), (15, 1913468), (20, 1435101), (30, 956734), (60, 478367), (383, 74940), (766, 37470), (1149, 24980), (1249, 22980), (1532, 18735), (1915, 14988), (2298, 12490), (2498, 11490), (3747, 7660), (3830, 7494), (4596, 6245), (4996, 5745)]