28755260

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{2243}}^1$

素因数の和:2893

約数の個数: 24

約数和(自身を含む): 60507216

約数和(自身を除く): 31751956

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2243, 2564, 3205, 4486, 6410, 8972, 11215, 12820, 22430, 44860, 1437763, 2875526, 5751052, 7188815, 14377630, 28755260]

約数ペア:

[(1, 28755260), (2, 14377630), (4, 7188815), (5, 5751052), (10, 2875526), (20, 1437763), (641, 44860), (1282, 22430), (2243, 12820), (2564, 11215), (3205, 8972), (4486, 6410)]