256221030

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{656977}}^1$

素因数の和:657000

約数の個数: 32

約数和(自身を含む): 662233824

約数和(自身を除く): 406012794

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 656977, 1313954, 1970931, 3284885, 3941862, 6569770, 8540701, 9854655, 17081402, 19709310, 25622103, 42703505, 51244206, 85407010, 128110515, 256221030]

約数ペア:

[(1, 256221030), (2, 128110515), (3, 85407010), (5, 51244206), (6, 42703505), (10, 25622103), (13, 19709310), (15, 17081402), (26, 9854655), (30, 8540701), (39, 6569770), (65, 3941862), (78, 3284885), (130, 1970931), (195, 1313954), (390, 656977)]