21043589

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{251}}^1$

素因数の和:353

約数の個数: 24

約数和(自身を含む): 25855200

約数和(自身を除く): 4811611

約数列:

[1, 7, 29, 49, 59, 203, 251, 413, 1421, 1711, 1757, 2891, 7279, 11977, 12299, 14809, 50953, 83839, 103663, 356671, 429461, 725641, 3006227, 21043589]

約数ペア:

[(1, 21043589), (7, 3006227), (29, 725641), (49, 429461), (59, 356671), (203, 103663), (251, 83839), (413, 50953), (1421, 14809), (1711, 12299), (1757, 11977), (2891, 7279)]