21787699

素因数分解:

${\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{521}}^1$

素因数の和:642

約数の個数: 16

約数和(自身を含む): 24053760

約数和(自身を除く): 2266061

約数列:

[1, 19, 31, 71, 521, 589, 1349, 2201, 9899, 16151, 36991, 41819, 306869, 702829, 1146721, 21787699]

約数ペア:

[(1, 21787699), (19, 1146721), (31, 702829), (71, 306869), (521, 41819), (589, 36991), (1349, 16151), (2201, 9899)]