21150875

素因数分解:

$5^3\times {\mathrm{41}}^1\times {\mathrm{4127}}^1$

素因数の和:4183

約数の個数: 16

約数和(自身を含む): 27046656

約数和(自身を除く): 5895781

約数列:

[1, 5, 25, 41, 125, 205, 1025, 4127, 5125, 20635, 103175, 169207, 515875, 846035, 4230175, 21150875]

約数ペア:

[(1, 21150875), (5, 4230175), (25, 846035), (41, 515875), (125, 169207), (205, 103175), (1025, 20635), (4127, 5125)]