21520203

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{7607}}^1$

素因数の和:7674

約数の個数: 16

約数和(自身を含む): 30675456

約数和(自身を除く): 9155253

約数列:

[1, 3, 23, 41, 69, 123, 943, 2829, 7607, 22821, 174961, 311887, 524883, 935661, 7173401, 21520203]

約数ペア:

[(1, 21520203), (3, 7173401), (23, 935661), (41, 524883), (69, 311887), (123, 174961), (943, 22821), (2829, 7607)]