21055671889

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1\times {\mathrm{2767}}^1$

素因数の和:3157

約数の個数: 32

約数和(自身を含む): 24910405632

約数和(自身を除く): 3854733743

約数列:

[1, 7, 61, 71, 251, 427, 497, 1757, 2767, 4331, 15311, 17821, 19369, 30317, 107177, 124747, 168787, 196457, 694517, 1087081, 1181509, 1375199, 4861619, 7609567, 11983877, 42365537, 49310707, 83887139, 296558759, 345174949, 3007953127, 21055671889]

約数ペア:

[(1, 21055671889), (7, 3007953127), (61, 345174949), (71, 296558759), (251, 83887139), (427, 49310707), (497, 42365537), (1757, 11983877), (2767, 7609567), (4331, 4861619), (15311, 1375199), (17821, 1181509), (19369, 1087081), (30317, 694517), (107177, 196457), (124747, 168787)]