20895939

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{617}}^1$

素因数の和:747

約数の個数: 24

約数和(自身を含む): 31236192

約数和(自身を除く): 10340253

約数列:

[1, 3, 9, 53, 71, 159, 213, 477, 617, 639, 1851, 3763, 5553, 11289, 32701, 33867, 43807, 98103, 131421, 294309, 394263, 2321771, 6965313, 20895939]

約数ペア:

[(1, 20895939), (3, 6965313), (9, 2321771), (53, 394263), (71, 294309), (159, 131421), (213, 98103), (477, 43807), (617, 33867), (639, 32701), (1851, 11289), (3763, 5553)]