202120120

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{7883}}^1$

素因数の和:8535

約数の個数: 32

約数和(自身を含む): 455537520

約数和(自身を除く): 253417400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2564, 3205, 5128, 6410, 7883, 12820, 15766, 25640, 31532, 39415, 63064, 78830, 157660, 315320, 5053003, 10106006, 20212012, 25265015, 40424024, 50530030, 101060060, 202120120]

約数ペア:

[(1, 202120120), (2, 101060060), (4, 50530030), (5, 40424024), (8, 25265015), (10, 20212012), (20, 10106006), (40, 5053003), (641, 315320), (1282, 157660), (2564, 78830), (3205, 63064), (5128, 39415), (6410, 31532), (7883, 25640), (12820, 15766)]