21485120

素因数分解:

$2^6\times 5^1\times {\mathrm{67141}}^1$

素因数の和:67158

約数の個数: 28

約数和(自身を含む): 51162204

約数和(自身を除く): 29677084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 67141, 134282, 268564, 335705, 537128, 671410, 1074256, 1342820, 2148512, 2685640, 4297024, 5371280, 10742560, 21485120]

約数ペア:

[(1, 21485120), (2, 10742560), (4, 5371280), (5, 4297024), (8, 2685640), (10, 2148512), (16, 1342820), (20, 1074256), (32, 671410), (40, 537128), (64, 335705), (80, 268564), (160, 134282), (320, 67141)]