28519280

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5021}}^1$

素因数の和:5105

約数の個数: 40

約数和(自身を含む): 67254624

約数和(自身を除く): 38735344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5021, 5680, 10042, 20084, 25105, 40168, 50210, 80336, 100420, 200840, 356491, 401680, 712982, 1425964, 1782455, 2851928, 3564910, 5703856, 7129820, 14259640, 28519280]

約数ペア:

[(1, 28519280), (2, 14259640), (4, 7129820), (5, 5703856), (8, 3564910), (10, 2851928), (16, 1782455), (20, 1425964), (40, 712982), (71, 401680), (80, 356491), (142, 200840), (284, 100420), (355, 80336), (568, 50210), (710, 40168), (1136, 25105), (1420, 20084), (2840, 10042), (5021, 5680)]