21119865

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{277}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 40352256

約数和(自身を除く): 19232391

約数列:

[1, 3, 5, 13, 15, 17, 23, 39, 51, 65, 69, 85, 115, 195, 221, 255, 277, 299, 345, 391, 663, 831, 897, 1105, 1173, 1385, 1495, 1955, 3315, 3601, 4155, 4485, 4709, 5083, 5865, 6371, 10803, 14127, 15249, 18005, 19113, 23545, 25415, 31855, 54015, 61217, 70635, 76245, 82823, 95565, 108307, 183651, 248469, 306085, 324921, 414115, 541535, 918255, 1242345, 1407991, 1624605, 4223973, 7039955, 21119865]

約数ペア:

[(1, 21119865), (3, 7039955), (5, 4223973), (13, 1624605), (15, 1407991), (17, 1242345), (23, 918255), (39, 541535), (51, 414115), (65, 324921), (69, 306085), (85, 248469), (115, 183651), (195, 108307), (221, 95565), (255, 82823), (277, 76245), (299, 70635), (345, 61217), (391, 54015), (663, 31855), (831, 25415), (897, 23545), (1105, 19113), (1173, 18005), (1385, 15249), (1495, 14127), (1955, 10803), (3315, 6371), (3601, 5865), (4155, 5083), (4485, 4709)]