21001799

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{433}}^1$

素因数の和:507

約数の個数: 24

約数和(自身を含む): 26685792

約数和(自身を除く): 5683993

約数列:

[1, 7, 13, 41, 91, 169, 287, 433, 533, 1183, 3031, 3731, 5629, 6929, 17753, 39403, 48503, 73177, 124271, 230789, 512239, 1615523, 3000257, 21001799]

約数ペア:

[(1, 21001799), (7, 3000257), (13, 1615523), (41, 512239), (91, 230789), (169, 124271), (287, 73177), (433, 48503), (533, 39403), (1183, 17753), (3031, 6929), (3731, 5629)]