28891225

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{3389}}^1$

素因数の和:3441

約数の個数: 24

約数和(自身を含む): 40354560

約数和(自身を除く): 11463335

約数列:

[1, 5, 11, 25, 31, 55, 155, 275, 341, 775, 1705, 3389, 8525, 16945, 37279, 84725, 105059, 186395, 525295, 931975, 1155649, 2626475, 5778245, 28891225]

約数ペア:

[(1, 28891225), (5, 5778245), (11, 2626475), (25, 1155649), (31, 931975), (55, 525295), (155, 186395), (275, 105059), (341, 84725), (775, 37279), (1705, 16945), (3389, 8525)]