21102700

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{5147}}^1$

素因数の和:5202

約数の個数: 36

約数和(自身を含む): 46918872

約数和(自身を除く): 25816172

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 5147, 10294, 20588, 25735, 51470, 102940, 128675, 211027, 257350, 422054, 514700, 844108, 1055135, 2110270, 4220540, 5275675, 10551350, 21102700]

約数ペア:

[(1, 21102700), (2, 10551350), (4, 5275675), (5, 4220540), (10, 2110270), (20, 1055135), (25, 844108), (41, 514700), (50, 422054), (82, 257350), (100, 211027), (164, 128675), (205, 102940), (410, 51470), (820, 25735), (1025, 20588), (2050, 10294), (4100, 5147)]