21455388

素因数分解:

$2^2\times 3^3\times {\mathrm{257}}^1\times {\mathrm{773}}^1$

素因数の和:1043

約数の個数: 48

約数和(自身を含む): 55913760

約数和(自身を除く): 34458372

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 257, 514, 771, 773, 1028, 1542, 1546, 2313, 2319, 3084, 3092, 4626, 4638, 6939, 6957, 9252, 9276, 13878, 13914, 20871, 27756, 27828, 41742, 83484, 198661, 397322, 595983, 794644, 1191966, 1787949, 2383932, 3575898, 5363847, 7151796, 10727694, 21455388]

約数ペア:

[(1, 21455388), (2, 10727694), (3, 7151796), (4, 5363847), (6, 3575898), (9, 2383932), (12, 1787949), (18, 1191966), (27, 794644), (36, 595983), (54, 397322), (108, 198661), (257, 83484), (514, 41742), (771, 27828), (773, 27756), (1028, 20871), (1542, 13914), (1546, 13878), (2313, 9276), (2319, 9252), (3084, 6957), (3092, 6939), (4626, 4638)]