81256575

素因数分解:

$3^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{17761}}^1$

素因数の和:17835

約数の個数: 24

約数和(自身を含む): 136554256

約数和(自身を除く): 55297681

約数列:

[1, 3, 5, 15, 25, 61, 75, 183, 305, 915, 1525, 4575, 17761, 53283, 88805, 266415, 444025, 1083421, 1332075, 3250263, 5417105, 16251315, 27085525, 81256575]

約数ペア:

[(1, 81256575), (3, 27085525), (5, 16251315), (15, 5417105), (25, 3250263), (61, 1332075), (75, 1083421), (183, 444025), (305, 266415), (915, 88805), (1525, 53283), (4575, 17761)]