80981636

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{251}}^1\times {\mathrm{1021}}^1$

素因数の和:1355

約数の個数: 24

約数和(自身を含む): 144224640

約数和(自身を除く): 63243004

約数列:

[1, 2, 4, 79, 158, 251, 316, 502, 1004, 1021, 2042, 4084, 19829, 39658, 79316, 80659, 161318, 256271, 322636, 512542, 1025084, 20245409, 40490818, 80981636]

約数ペア:

[(1, 80981636), (2, 40490818), (4, 20245409), (79, 1025084), (158, 512542), (251, 322636), (316, 256271), (502, 161318), (1004, 80659), (1021, 79316), (2042, 39658), (4084, 19829)]