21092045

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{229}}^1$

素因数の和:369

約数の個数: 24

約数和(自身を含む): 27779400

約数和(自身を除く): 6687355

約数列:

[1, 5, 13, 65, 109, 169, 229, 545, 845, 1145, 1417, 2977, 7085, 14885, 18421, 24961, 38701, 92105, 124805, 193505, 324493, 1622465, 4218409, 21092045]

約数ペア:

[(1, 21092045), (5, 4218409), (13, 1622465), (65, 324493), (109, 193505), (169, 124805), (229, 92105), (545, 38701), (845, 24961), (1145, 18421), (1417, 14885), (2977, 7085)]