20844520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27427}}^1$

素因数の和:27457

約数の個数: 32

約数和(自身を含む): 49370400

約数和(自身を除く): 28525880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27427, 54854, 109708, 137135, 219416, 274270, 521113, 548540, 1042226, 1097080, 2084452, 2605565, 4168904, 5211130, 10422260, 20844520]

約数ペア:

[(1, 20844520), (2, 10422260), (4, 5211130), (5, 4168904), (8, 2605565), (10, 2084452), (19, 1097080), (20, 1042226), (38, 548540), (40, 521113), (76, 274270), (95, 219416), (152, 137135), (190, 109708), (380, 54854), (760, 27427)]