20894805

素因数分解:

$3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2357}}^1$

素因数の和:2565

約数の個数: 24

約数和(自身を含む): 36416952

約数和(自身を除く): 15522147

約数列:

[1, 3, 5, 9, 15, 45, 197, 591, 985, 1773, 2357, 2955, 7071, 8865, 11785, 21213, 35355, 106065, 464329, 1392987, 2321645, 4178961, 6964935, 20894805]

約数ペア:

[(1, 20894805), (3, 6964935), (5, 4178961), (9, 2321645), (15, 1392987), (45, 464329), (197, 106065), (591, 35355), (985, 21213), (1773, 11785), (2357, 8865), (2955, 7071)]